Go to advanced search

by vipinv23
Mon Jan 20, 2020 7:02 am
Forum: General discussion
Topic: Download kernel source & compile
Replies: 2
Views: 215

Download kernel source & compile

Hello
I am using the following link:
sudo wget https://raw.githubusercontent.com/notro ... rpi-source -O /usr/bin/rpi-source

but its generating error as:
404 not found

please guide
by vipinv23
Thu Jan 02, 2020 7:04 am
Forum: Python
Topic: Pi program for I2S SPH0645 Adafruit microphone
Replies: 1
Views: 358

Pi program for I2S SPH0645 Adafruit microphone

Hello,

I have Adafruit SPH0645 I2S microphone breakout board.

I shall grateful if someone can help me with Pi program for recording sound from it and analysis of the recorded data
by vipinv23
Wed Jan 16, 2019 10:36 am
Forum: Graphics, sound and multimedia
Topic: arecord format
Replies: 2
Views: 614

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: 614

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: 271

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: 11333

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: 11333

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: 11333

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: 11333

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