Search found 85 matches

by Jakobsen
Thu Jan 23, 2020 9:12 pm
Forum: ESP-ADF
Topic: why isn't ESP-ADF components in ESP-IDF
Replies: 3
Views: 2470

Re: why isn't ESP-ADF components in ESP-IDF

It think the path that your are on sounds good. More releases of smaller parts the - few big releases. From where you started to where we are today is a pleasure to see. In my daily work I work with own and others components and would love to have a system to enable/disable features/components in a ...
by Jakobsen
Tue Dec 10, 2019 10:27 pm
Forum: General Discussion
Topic: Realtime MP3 encoder 48kHz Stereo
Replies: 16
Views: 7624

Re: Realtime MP3 encoder 48kHz Stereo

Hi PoulNi There are so many possibilities if you want to receive and process audio. And on the ESP32 ESP-IDF you can choose what fits your project. I agree that the dedicated MP3 decoder IC fading out and VLSI from Finland was and is the only one to play that marked. Going all software mp3 was nicel...
by Jakobsen
Fri Dec 06, 2019 7:21 pm
Forum: ESP-IDF
Topic: Web Socket Server
Replies: 9
Views: 2226

Re: Web Socket Server

Hi PilipESP

I use this componet from Blake Felt - Code high quality and a nice and clean bare metal implementation

https://github.com/Molorius/esp32-websocket

/Jorgen
by Jakobsen
Mon Jul 01, 2019 7:11 am
Forum: General Discussion
Topic: Data type/format in ESP-IDF A2DP-SINK demo
Replies: 3
Views: 1382

Re: Data type/format in ESP-IDF A2DP-SINK demo

No i am not aware if that is possible. In the call back function you need to do a simple stereo to mono mixer or just pick left or right channel. But i under stand you concern on saving bandwidth from the source if you can move this process to the source it self. Take a look at this post https://www...
by Jakobsen
Mon Jun 24, 2019 6:26 am
Forum: General Discussion
Topic: Data type/format in ESP-IDF A2DP-SINK demo
Replies: 3
Views: 1382

Re: Data type/format in ESP-IDF A2DP-SINK demo

Hi
Data out for bluetooth sink demo si :

Signed 16 bits, big-edian, 2 channel

data[..] = { left[7:0], left[15:8], right[7:0], right[15:8],left[7:0], ... }

Regards Jakobsen
by Jakobsen
Fri Feb 22, 2019 1:05 pm
Forum: ESP-ADF
Topic: Request - software MP3 decoder for ADF
Replies: 3
Views: 2024

Re: Request - software MP3 decoder for ADF

Hi A
mp3 decoder has been around since way back.
Google for boddycasinos web radio - or use the build in library function in the Audio frame work.
/Jørgen
by Jakobsen
Fri Dec 07, 2018 5:10 am
Forum: General Discussion
Topic: How to obtain documented assembly listing ?
Replies: 4
Views: 2074

Re: How to obtain documented assembly listing ?

Thanks - That was very help full for the DSP stuff I am working on.
I have been using obj dump until now but this is much more lean.
/Jakobsen
by Jakobsen
Mon Nov 26, 2018 11:31 am
Forum: Hardware
Topic: I2S Maximum Channels
Replies: 3
Views: 2277

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...
by Jakobsen
Tue May 15, 2018 10:38 am
Forum: Hardware
Topic: I2S Maximum Channels
Replies: 3
Views: 2277

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 ...
by Jakobsen
Thu Jan 18, 2018 8:51 am
Forum: Sample Code
Topic: audio DSP on the ESP32 chip
Replies: 2
Views: 3336

Re: audio DSP on the ESP32 chip

Did some DSP stuff on the ESP using BuddyCasino's web radio and the I2S input multilevel Audio amplifier from Merus Audio. I have stated a laying out a DSP audio library to do filtering, delay, audio flow frame work, etc - what ever is needed to do Audio system design with the ESP32. In doing so I h...

Go to advanced search