Go to advanced search

by vipinv23
Wed Jan 16, 2019 10:36 am
Forum: Graphics, sound and multimedia
Topic: arecord format
Replies: 2
Views: 285

Re: arecord format

Hi,

Thank you very much
by vipinv23
Wed Jan 16, 2019 6:58 am
Forum: Graphics, sound and multimedia
Topic: arecord format
Replies: 2
Views: 285

arecord format

Hello,
Please may i know the format in which arecord command stores stereo wav file?
or wav file format of arecord command?
I want to separate both audio channels in python for further processing

also please can you provide code for separation both audio channels in python
by vipinv23
Tue Jan 01, 2019 2:48 pm
Forum: Graphics, sound and multimedia
Topic: I2S microphone plot wav file
Replies: 0
Views: 163

I2S microphone plot wav file

Hello, I am using Adafruit I2S microphone interfaced to Raspberry Pi+ 3 board. I am able to record audio input using Raspberry Pi comandline. Now I want to record audio input and plot audio wav file using Python programming i.e. live audio streaming using Python. Please can anyone help with Python p...
by vipinv23
Wed Dec 12, 2018 5:03 am
Forum: Python
Topic: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Python)
Replies: 25
Views: 7709

Re: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Pyth

HI, Thanks for response I shall try 4 bit one That is because those chips don't have them... I would use a 4 bit binary counter driven by the shit clock signal, look for a change on q3 (highest bit) which would indicate 8 clock pulses have been seen. I would use a 74hc299 or 74hc595 (google for samp...
by vipinv23
Tue Dec 11, 2018 5:05 pm
Forum: Python
Topic: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Python)
Replies: 25
Views: 7709

Re: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Pyth

I would use a 74hc299 or 74hc595 (google for sample usage) Thank you for your response. I realize that it may not be possible to acquire a single bit @ 2MHz. But, if I use a 8-bit shift register, then I would have to acquire 8 bits or 1 byte every 2M/8 = 250kHz. A shift register also sends out a lo...
by vipinv23
Mon Dec 10, 2018 5:12 pm
Forum: Python
Topic: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Python)
Replies: 25
Views: 7709

Re: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Pyth

Thank you for your response. I realize that it may not be possible to acquire a single bit @ 2MHz. But, if I use a 8-bit shift register, then I would have to acquire 8 bits or 1 byte every 2M/8 = 250kHz. A shift register also sends out a logic 1 when the data is ready to be read in parallel. So, ca...
by vipinv23
Sun Dec 09, 2018 6:01 am
Forum: Python
Topic: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Python)
Replies: 25
Views: 7709

Re: Reading PDM data @ 2MHz with Raspberry Pi + pigpio (Pyth

Thank you for your response. I realize that it may not be possible to acquire a single bit @ 2MHz. But, if I use a 8-bit shift register, then I would have to acquire 8 bits or 1 byte every 2M/8 = 250kHz. A shift register also sends out a logic 1 when the data is ready to be read in parallel. So, ca...

Go to advanced search