Converting audio to MIDI or decreasing podcast size to few bytes

I was looking for a way to converting audio (WAV file) to MIDI files then I discovered the “waon” project:

http://sourceforge.net/projects/waon/

Using it I can convert wave files to mid files. First I convert MP3 to wav files this way:

$ mpg123 -w file.wav file_original.mp3

Then finally I convert the wav to mid using this command:

$ ./waon -i file.wav -n 2048 -b 60 -t 120 -o file.mid

After converting many music files to mid I decided to convert an audio voice (postcast) and try to understand it (I suggest you to start with a slow audio like these at http://learningenglish.voanews.com).

Initially you cannot understand nothing, but after few minutes your brain adapts to it and will understand everything.

Now see the postcast file size comparison:

$ ls -l file.wav 
-rw-r--r-- 1 alan alan 228920876 Feb 28 13:06 file.wav
$ ls -l file.mp3 
-rw-r--r-- 1 alan alan 20764946 Feb 26 15:59 file.mp3
$ ls -l file.mid 
-rw------- 1 alan alan 580111 Feb 28 13:08 file.mid

Do you think IP camera is unsafe? Welcome Baby!

I bought an IP Camera (to use inside a product we are developing) similar to this one:
http://www.alibaba.com/product-detail/H-264-960H-the-smallest-38x38mm_1389016530.html

Unfortunately it arrived with no documentation. Even the IP I should figure out myself, it was not a big issue because normally IP Cameras use the 192.168.1.x range.

Using the ping command it was easy to figure out it was in the address 192.168.1.168.

Now let me see which ports are opened:

$ sudo nmap -sS -P0 192.168.1.168

Starting Nmap 6.47 ( http://nmap.org ) at 2015-02-08 20:47 EST
Nmap scan report for 192.168.1.168
Host is up (0.099s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
23/tcp   open  telnet
80/tcp   open  http
3001/tcp open  nessus
8080/tcp open  http-proxy
MAC Address: 00:A7:21:63:A7:7F (Unknown)

Nmap done: 1 IP address (1 host up) scanned in 27.41 seconds

Wow, telnet port is open, let try it:

$ telnet 192.168.1.168
Trying 192.168.1.168...
Connected to 192.168.1.168.
Escape character is '^]'.

A320D login: root
Welcome!Baby!
[~]#

CRAZY!!! It allows me to log in as root with not password and printed a funny “Welcome!Baby!” msg!

Well, it is funny to me, but for people using these cameras connected to Internet to protect their property it is very dangerous.

UPDATE: More info about the camera hw/processor:

[~]#cat /proc/cpuinfo
Processor       : FA626TE rev 1 (v5l)
BogoMIPS        : 532.48
Features        : swp half thumb 
CPU implementer : 0x66
CPU architecture: 5TE
CPU variant     : 0x0
CPU part        : 0x626
CPU revision    : 1

Hardware        : Faraday GM8126
Revision        : 0000
Serial          : 0000000000000000

UPDATE 2: I didn’t find a serial connector in the board, then I searched in the datasheet and discovered UART1 RX is pin 87 and TX is pin 88. Then I connected a small wire from my USB/serial dongle to pins 87 and 88, then after testing many serial configuration I discovered that they are using an unusual baudrate 38400 8n1 and finally got the boot log:

MP SPI-NOR Bootstrap v0.2
Boot image offset: 0x10000. Booting Image .....
0567Will set the following freq...
PLL1: 800 MHz, PLL2: 540 MHz, CPU freq: 540 MHz, AHB freq: 270 MHz, DDR freq: 8z
go...

*********************************************
Please input Space to run Linux
Please input ESC to run UBOOT
Please input . to run burn-in
Otherwise, system will run Linux after 5 sec
*********************************************
Load image from SPI-NOR offset 0x80000 to sdram 0x4000000
Jump 0x4000000
Uncompressing Linux.............................................................
Linux version 2.6.28 (root@localhost.localdomain) (gcc version 4.4.0 (Faraday C3
CPU: FA626TE [66056261] revision 1 (ARMv5TE), cr=0000797f
CPU: VIPT aliasing data cache, VIPT aliasing instruction cache
Machine: Faraday GM8126
Warning: bad configuration page, trying to continue
Memory policy: ECC disabled, Data cache writeback
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: mem=128M console=uart,shift,2,io,0xF9830000,38400
Early serial console at I/O port 0xf9830000 (options '38400', shift 2)          
console [uart0] enabled                                                         
PID hash table entries: 512 (order: 9, 2048 bytes)                              
IC: GM8128 MP                                                                   
GM Clock: CPU = 540 MHz, AHBCLK = 270 MHz, PLL1CLK = 800 MHz, PLL2CLK = 540 MHz 
console handover: boot [uart0] -> real [ttyS0]                                  
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)                  
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)                    
Memory: 128MB = 128MB total                                                     
Memory: 118528KB available (3697K code, 187K data, 7316K init)                  
Calibrating delay loop... 532.48 BogoMIPS (lpj=266240)                          
Mount-cache hash table entries: 512                                             
CPU: Testing write buffer coherency: ok                                         
net_namespace: 424 bytes                                                        
Fmem: node 0 is online, alloc pages = 20480(active pages = 32768)               
high_memory:0xc8000000, VM Start:0xc8800000, End:0xe0000000                     
NET: Registered protocol family 16                                              
PMU: Mapped at 0xf9900000                                                       
pmu_get_cpu_clk:221                            
Attach GM AHB-DMA Driver                                                        
SCSI subsystem initialized                                                      
usbcore: registered new interface driver usbfs                                  
usbcore: registered new interface driver hub                                    
usbcore: registered new device driver usb                                       
Switched to NOHz mode on CPU #0                                                 
NET: Registered protocol family 2                                               
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)                  
TCP established hash table entries: 4096 (order: 3, 32768 bytes)                
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)                       
TCP: Hash tables configured (established 4096 bind 4096)                        
TCP reno registered                                                             
NET: Registered protocol family 1                                               
Video Timer(timer3) Max 31000ms in 0xf9720840 HZ.                               
JFFS2 version 2.2. (NAND) �© 2001-2006 Red Hat, Inc.                            
msgmni has been set to 231                                                      
io scheduler noop registered                                                    
io scheduler anticipatory registered (default)                                  
io scheduler deadline registered                                                
io scheduler cfq registered                                                     
probe ftgpio010.0 OK!!, at c8858000                                             
probe ftgpio010.1 OK!!, at c885c000                                             
probe ftgpio010.2 OK!!, at c8860000                                             
Serial: 8250/16550 driver 4 ports, IRQ sharing disabled                         
serial8250: ttyS0 at I/O 0xf9830000 (irq = 9) is a 16550A                       
serial8250: ttyS1 at I/O 0xf9840000 (irq = 10) is a 16550A                      
serial8250: ttyS2 at I/O 0xf9850000 (irq = 20) is a 16550A                      
serial8250: ttyS3 at I/O 0xf9880000 (irq = 21) is a 16550A                      
brd: module loaded                                                              
loop: module loaded                                                             
PPP generic driver version 2.4.2                                                
NET: Registered protocol family 24                                              
rtl8150: v0.6.2 (2004/08/27):rtl8150 based usb-ethernet driver                  
usbcore: registered new interface driver rtl8150                                
usbcore: registered new interface driver asix                                   
usbcore: registered new interface driver cdc_ether                              
usbcore: registered new interface driver net1080                                
usbcore: registered new interface driver cdc_subset                             
usbcore: registered new interface driver zaurus                                 
Linux video capture interface: v2.00                                            
Driver 'sd' needs updating - please use bus_type methods                        
Driver 'sr' needs updating - please use bus_type methods                        
Creating 6 MTD partitions on "wb_spi_flash":                                    
0x00080000-0x00eff000 : "Linux Section"                                         
0x00f00000-0x01000000 : "User Section"                                          
0x00001000-0x00010000 : "Loader Section"                                        
0x00010000-0x00060000 : "BurnIn Section"                                        
0x00060000-0x0007e000 : "UBoot Section"                                         
0x0007e000-0x00080000 : "CFG Section"                                           
Probe FTSSP010 SPI Controller at 0x98200000 (irq 6)                             
usbmon: debugfs is not available                                                
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver                      
AMBA bus_register ok                                                            
Enter Device A                                                                  
temp = 340                                                                      
Drive Vbus because of ID pin shows Device A                                     
otg2xx device_register ok                                                       
AMBA_bus_match(...) Found Driver FOTG2XX_DRV                                    
AMBA_bus_match(...) Found Driver FOTG2XX_DRV                                    
FOTG2XX_DRV fotg2xx_dev: GM  USB2.0 Host Controller                             
FOTG2XX_DRV fotg2xx_dev: new USB bus registered, assigned bus number 1          
FOTG2XX_DRV fotg2xx_dev: irq 4, io mem 0xf9220000                               
FOTG2XX_DRV fotg2xx_dev: USB 2.0 started, EHCI 1.00                             
usb usb1: configuration #1 chosen from 1 choice                                 
hub 1-0:1.0: USB hub found                                                      
hub 1-0:1.0: 1 port detected                                                    
FOTG200 Controller Initialization                                               
fotg200 int enable = 1f30                                                       
Initializing USB Mass Storage driver...                                         
usbcore: registered new interface driver usb-storage                            
USB Mass Storage support registered.                                            
mice: PS/2 mouse device common for all mice                                     
i2c /dev entries driver                                                         
ftiic010 ftiic010.0: irq 18, mapped at c886c000                                 
usbcore: registered new interface driver usbhid                                 
usbhid: v2.6:USB HID core driver                                                
Advanced Linux Sound Architecture Driver Version 1.0.18rc3.                     
ALSA device list:                                                               
  No soundcards found.                                                          
TCP cubic registered                                                            
NET: Registered protocol family 17                                              
RPC: Registered udp transport module.                                           
RPC: Registered tcp transport module.                                           
Freeing init memory: 7316K                                                      
***************************************                                         
Busybox starts to run                                                           
***************************************                                         
Mounting root fs rw ...                                                         
Mounting other filesystems ...                                                  
Setting hostname ...                                                            
Mounting user's MTD partion                                                     
FTMAC with FARADAY Internal PHY support                                         
Has JFFS2 on mtdblock1FTMAC110 Driver (Linux 2.6) 01/10/11 - (C) 2011 GM Corp.  
                                                                                
reset Faraday Internal PHY.                                                     
mmc0: SDHCI controller on  [ftsdc010] using DMA                           
ftrtc011 ftrtc011: rtc core: registered ftrtc011 as rtc0                        
                                                                                
Frammap: 1536 pages in DDR0 are freed.                                          
Frammap: DDR0: memory base=0x1800000, memory size=0x4a00000, alignment=256K     
Frammap: version 0.28.3, 1 DDR is managed.                                      
                                                                                
VideoGraph v0.44 You may use                                                    
   #echo 11 > /proc/videograph/dbg                                              
to enable debug mode (0xbf05050c)                                               
Debug message at 0xc88fc000 start pointer 0xbf0705f0 size 0x124f80              
Insert dvr_common driver done.                                                  
Platform GM812600                                                               
    enc_in0=(buf: 4177920,6,0)                                                  
    enc_in0_d=(buf: 4177920,6,1)                                                
    enc_out0=(res: 1920,1088)                                                   
    enc_out0=(buf: 1775616,4,0)                                                 
    ssenc_out0=(buf: 1775616,1,0)                                               
    sub1_enc_out0=(res: 1920,1088)                                              
    sub1_enc_out0=(buf: 1775616,3,0)                                            
    sub2_enc_out0=(res: 1920,1088)                                              
    sub2_enc_out0=(buf: 1775616,3,0)                                            
    enc_in1=(buf: 614400,4,0)                                                   
    enc_in1_d=(buf: 614400,4,1)                                                 
    enc_out1=(res: 640,480)                                                     
    enc_out1=(buf: 261120,4,0)                                                  
    scl0_out1=(res: 320,240)                                                    
    scl0_out1=(buf: 153600,2,0)                                                 
    scl1_out1=(res: 160,112)                                                    
    scl1_out1=(buf: 35840,2,0)                                                  
    ssenc_out1=(buf: 261120,1,0)                                                
    sub1_enc_out1=(res: 640,480)                                                
    sub1_enc_out1=(buf: 261120,3,0)                                             
    sub2_enc_out1=(res: 640,480)                                                
    sub2_enc_out1=(buf: 261120,3,0)                                             
    enc_in2=(buf: 153600,4,0)                                                   
    enc_in2_d=(buf: 153600,4,1)                                                 
    enc_out2=(res: 320,240)                                                     
    enc_out2=(buf: 65280,4,0)                                                   
    ssenc_out2=(buf: 65280,1,0)                                                 
    sub1_enc_out2=(res: 320,240)                                                
    sub1_enc_out2=(buf: 65280,3,0)                                              
    sub2_enc_out2=(res: 320,240)                                                
    sub2_enc_out2=(buf: 65280,3,0)                                              
    enc_in3=(buf: 35840,4,0)                                                    
    enc_in3_d=(buf: 35840,4,1)                                                  
    enc_out3=(res: 160,112)                                                     
    enc_out3=(buf: 15232,4,0)                                                   
    ssenc_out3=(buf: 15232,1,0)                                                 
    sub1_enc_out3=(res: 160,112)                                                
    sub1_enc_out3=(buf: 15232,3,0)                                              
    sub2_enc_out3=(res: 160,112)                                                
    sub2_enc_out3=(buf: 15232,3,0)                                              
ISP v3.06, built @ Mar  8 2013 16:32:20                                         
set cmos clk out 27000000 Hz                                                    
sen_ar0331(init): sensor v:8192                                                 
                                                                                
pclk(74250000) XCLK(27000000)                                                   
t_row=2963 pclk=74250000                                                        
fcap: V0.3.13                                                                   
vcap_dev: [0]:bAlbum_bug=0, bCrop_bug=1, bCU_bug=0                              
                LL_BusDeadlock_bug=0, bSupportSplitOSDDispRamWritePort=1        
                                                                                
fcap: [0]: Link List mode!                                                      
fcap: fosd00: minor=56                                                          
fcap: fosd02: minor=55                                                          
fcap: fosd01: minor=54                                                          
fcap: fosd03: minor=53                                                          
vcap_dev: [1]:bAlbum_bug=0, bCrop_bug=1, bCU_bug=0                              
                LL_BusDeadlock_bug=0, bSupportSplitOSDDispRamWritePort=1        
                                                                                
fcap: [1]: Link List mode!                                                      
fcap: fosd10: minor=52                                                          
fcap: fosd12: minor=51                                                          
fcap: fosd11: minor=50                                                          
fcap: fosd13: minor=49                                                          
load CFG: /mnt/mtd/isp_ar0331.cfg                                               
glare_enable(0), entry_S1base_ev(1723), glare_th(150)                           
pclk(74250000) XCLK(27000000)                                                   
t_row=2963 pclk=74250000                                                        
SCL: Version, v1.17                                                             
SCL: div:4                                                                      
FAVC Encoder IRQ mode(29)v4.2.1                                                 
FAVC codec Max Resolution is 1920x1072, built @ Apr 24 2013 15:37:02            
                                                                                
FTDI210 registers 32 entities to video graph!                                   
FTDI210 Driver v1.4 (1 engine(s))                                               
ft-32ssp: common[ver:0.3.4] INIT OK!                                            
card->cardno = 2                                                                
card->pbase = 98a00000                                                          
card->vbase = c8bfe000                                                          
card->irq = 11                                                                  
my_card->capture.dma_ch = 4                                                     
my_card->playback.dma_ch = 5                                                    
ft-32ssp: SoundCard(2) attached OK (c65561d0)                                   
I2S probe ok in Slave mode.                                                     
Init SAR ADC done.                                                              
register sar adc device (0) OK!!                                                
Please: mknod /dev/th_gpio c 222 0                                              
crwth_gpio init() ok!                                                           
-rw----    1 root     root     254,   0 Jan  1 00:00 /dev/rtc0                  
***************************************                                         
  Please: mknod /dev/th_key c 223 0                                             
  th_key init() ok!                                                             
  IP camera starts to run                                                       
***************************************                                         
mount: mounting /dev/mmcblk0p1 on /sd/ failed: No such file or directory        
                                                                                
                                                                                
                                                                                
                                                                                
            ****************************************************
                            NVS & DVS & IPCAM                    

                    SoftVersion : V24.13292.01.71
  
                    FileVersion : 2013.10.28
  
            ****************************************************

1970-01-01 00:00:04
SDTimeJudError1 = 1
killall: rtsp: no process killed
sh: /app/rtsp: not found
connect_to_server fd:0 
Y--ExistWiFi 0 
NotExistAudio 0 
NotExistIO    0 
NotExistRS485 0 
fcap: [0]:OSD P0 default fonts num=42

ispfcap: [0]:OSD P1 default fonts num=42

_set_init() OK!
Init                                                                            
H264 rate control version: fix 0.95                                             
SigPlatform 8126 version 81262210                                               
nafcap: [0]:IN=ISP                                                              
l RecvEvent! SenseSignalID:64                                                   
TApp::TApp()                                                                    
Init TDiskMgr                                                                   
Init (UDP) Talk in IP:239.255.255.250 Port:3001                                 
Init CtrlPTZ                                                                    
 BPS 2400 DataBit 8 ParityCheck 0 StopBit 0                                     
InitPTZ() OK!                                                                   
(dataout_0) Timeout to wait AP buffer get, skip! (0x952d,0x973f flow 528)       
                                                                                
##### Transfer Group 0 Done,746ms!                                              
fcap_lli(dev_handle_irq): [0]:P1 miss frame done!(frame_cnt=0x00000018,mach_sta)
                                                                                
Init (TCP) CmdSvr in LocalPort:3001                                             
Init (UDP) uPnP in IP:239.255.255.250 Port:1900                                 
1970-01-01 00:00:05                                                             
open /dev/fosd00                                                                
open device:/dev/fosd00 successfully!                                           
open /dev/fosd01                                                                
open device:/dev/fosd01 successfully!                                           
input_mode = 1                                                                  
fcap_lli(do_Reset_workqueue): [0]:Do reset after 1964 ms.(2000 ms)              
                                                                                
killall: onvif_gm: no process killed                                            
arg is error                                                                    
                                                                                
##### Transfer Group 1 Done,4136ms!                                             
/bin/sh: can't access tty; job control turned off                               
/ # Connect 19 LocalPort 3001 RemoteIP 127.0.0.1 RemotePort 60720               
main  gCNetName:eth0!!!!                                                        
Connect 20 LocalPort 3001 RemoteIP 127.0.0.1 RemotePort 60721                   
Connect 21 LocalPort 3001 RemoteIP 127.0.0.1 RemotePort 60722                   
ForceKeyFrame[0] == true                                                        
ForceKeyFrame_sub[0] == true

Como instalar o software TTS Festival no Linux (Debian Potato)

Está dica é muito antiga e só estou postando aqui porque frequentemente recebo emails pedindo instruções de como compilar.

Infelizmente você precisará de uma versão de Linux antigo, i.e. Debian Potato, pois o Festival + software OGI precisam ser corrigidos p/ funcionar com uma versão diferente do GCC 2.95.

Instruções para instalar o diphone em Portugues para o Festival

PASSO 1 – DOWNLOAD
Baixe os seguintes arquivos do site do Festival e do OGI:
*festival-1.4.1.tar.gz
*speech_tools-1.2.1.tar.gz
*festlex_OALD.tar.gz
*festlex_POSLEX.tar.gz
*festvox_rablpc16k.tar.gz
*OGIresLPC-2.0.7.tar.gz

Consiga com o arquivo que adiciona suporte ao portugues do Brasil:
*festival_portuguese.tar.gz

PASSO 2 – DESCOMPACTAÇÃO
Crie um diretório para instalar o Festival(ex. /TTS)
Extrai todos os arquivos acima para o diretório que você criou.

PASSO 3 – CONFIGURAÇÃO
Renomei o arquivo /TTS/speech_tools/config/config-dist para:
/TTS/speech_tools/config/config
Renomei o arquivo /TTS/festival/config/config-dist para:
/TTS/festival/config/config, vá até as ultimas linhas deste
arquivo e inclua as seguintes linhas:

ALSO_INCLUDE += OGIcommon
ALSO_INCLUDE += OGIdbase
ALSO_INCLUDE += OGIresLPC
ALSO_INCLUDE += OGIinsert

PASSO 4 – INSTALAÇÃO
Entre no diretório /TTS/speech_tools e execute o comando “make”, agrade o
termino da instalação, ok, deu certo!!!?
Em seguida vá para /TTS/festival e execute o comando “make” novamente, agrade
o termino da instalação, pronto, Festival instalado com sucesso!

PASSO 5 – EXECUTANDO
Entre no diretório /TTS/festival/bin e execute o comando “./festival”.
Aparecerá o prompt , então digite: “(voice_aga_diphone)”
Pronto agora é digitar: (SayText “Obrigado Mauricio!”)

Alan Carvalho de Assis
P.S. – Quando eu tentei instalar a primeira vez, ocorreu um erro, mas foi
porque eu tentei compilar /TTS/festival antes de ter compilado /TTS/speech_tools

Flashing NuttX on my Dog Feeder board powered by STM32F107

This is the way I’m flashing NuttX on my board (called “GreenBone”) using the current (as of 20150129) OpenOCD:

This is my openocd.cfg :

# STM32F107 Target

# Using stlink as SWD programmer
source [find interface/stlink-v2.cfg]

# SWD as transport
transport select hla_swd

# Use STM32F1X target
set WORKAREASIZE 0x4000
source [find target/stm32f1x.cfg]

Then I execute OpenOCD this way:

$ sudo openocd -f openocd.cfg 

Open On-Chip Debugger 0.9.0-dev-00251-g1fa4c72 (2015-01-28-20:08)
Licensed under GNU GPL v2
For bug reports, read

http://openocd.sourceforge.net/doc/doxygen/bugs.html

Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 1000 kHz
adapter_nsrst_delay: 100
none separate
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : clock speed 950 kHz
Info : STLINK v2 JTAG v17 API v2 SWIM v4 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.145571
Info : stm32f1x.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : accepting 'telnet' connection on tcp/4444

Finally I connect to its telnet server and flash nuttx.bin:

$ telnet 127.0.0.1 4444
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
Open On-Chip Debugger
> reset halt
target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x200001e0 msp: 0x20005000
> flash write_image erase nuttx.bin 0x08000000
auto erase enabled
device id = 0x10016418
flash size = 256kbytes
target state: halted
target halted due to breakpoint, current mode: Thread 
xPSR: 0x61000000 pc: 0x2000003a msp: 0x20005000
wrote 69632 bytes from file nuttx.bin in 3.056594s (22.247 KiB/s)
> reset run
> exit