Hi,
Esp32 have two i2s peripherals. Can both be configured to as output? If yes is it possible to have different output from them?
I would like to build a simple boombox with simple frequency filtering.
What is the maximum lrck frequency? Is it possible to have multichannel audio for crossover purposes.
Thanks
I2S Maximum Channels
Re: I2S Maximum Channels
Hi Barometre
Yes - I did a simple test last year.
Simple crossover filter for bass / tweeter on left channel audio but only using on i2s output from the ESP32. Should be easy to use second i2s output for right channel as well.
I will check if possible on my setup as well - The amp's we design takes 2 x i2s input to support up to 4 single ended output channels.
Regards Jakobsen
Yes - I did a simple test last year.
Simple crossover filter for bass / tweeter on left channel audio but only using on i2s output from the ESP32. Should be easy to use second i2s output for right channel as well.
I will check if possible on my setup as well - The amp's we design takes 2 x i2s input to support up to 4 single ended output channels.
Regards Jakobsen
Analog Digital IC designer / DevOps @ Merus Audio, Copenhagen, Denmark.
We do novel and best in class Audio amplifiers for consumer products.
Programmed assembler for C-64 back in 1980's, learned some electronics - hacking since then
We do novel and best in class Audio amplifiers for consumer products.
Programmed assembler for C-64 back in 1980's, learned some electronics - hacking since then
Re: I2S Maximum Channels
Hi,Jakobsen wrote:Hi Barometre
Yes - I did a simple test last year.
Simple crossover filter for bass / tweeter on left channel audio but only using on i2s output from the ESP32. Should be easy to use second i2s output for right channel as well.
I will check if possible on my setup as well - The amp's we design takes 2 x i2s input to support up to 4 single ended output channels.
Regards Jakobsen
Do you mean, "you set both I2S data lines as output and each outputting stereo channels then you had 2*stereo channels to frequency filtering"?
Thanks
Re: I2S Maximum Channels
Yes
Stereo audio in from HTTP audio stream - Split to 4 channels using 2xi2s hardware block
I2S inst 0 : Left bass /Left treble - Amp 2 x single end
I2S inst 1 : Right bass /Right treble - Amp 2 x single end
Or alternative 2.1 system
I2S inst 0 : Left treble /Right treble - Amp 2 single end
I2S inst 1 : Mixed left/right bass - Amp 1 BTL
/j
Stereo audio in from HTTP audio stream - Split to 4 channels using 2xi2s hardware block
I2S inst 0 : Left bass /Left treble - Amp 2 x single end
I2S inst 1 : Right bass /Right treble - Amp 2 x single end
Or alternative 2.1 system
I2S inst 0 : Left treble /Right treble - Amp 2 single end
I2S inst 1 : Mixed left/right bass - Amp 1 BTL
/j
Analog Digital IC designer / DevOps @ Merus Audio, Copenhagen, Denmark.
We do novel and best in class Audio amplifiers for consumer products.
Programmed assembler for C-64 back in 1980's, learned some electronics - hacking since then
We do novel and best in class Audio amplifiers for consumer products.
Programmed assembler for C-64 back in 1980's, learned some electronics - hacking since then
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