Search found 89 matches

by Jakobsen
Fri Mar 06, 2020 7:38 am
Forum: ESP-ADF
Topic: How to play a beep during MP3 playback?
Replies: 4
Views: 11578

Re: How to play a beep during MP3 playback?

HI Very interesting problem - and I expect that has been just done at application level in many ways. I think this all also call for a best practice one the IDF and the ADF. I my framework (build on IDF) I have inserted a DSP processing task at the last stage prior to sending audio sample off to the...
by Jakobsen
Tue Mar 03, 2020 4:45 pm
Forum: ESP32 Arduino
Topic: A few questions about DSP
Replies: 3
Views: 5104

Re: A few questions about DSP

Hi
Yes just study the Lyra sch - external ADC/DAC only requires 4 x io pins for I2S (Audio) and 2 x io pins for I2C lines (Control).
Rest is free for you
/j
by Jakobsen
Mon Mar 02, 2020 8:57 pm
Forum: ESP32 Arduino
Topic: A few questions about DSP
Replies: 3
Views: 5104

Re: A few questions about DSP

Hi Viomad Yes lots of questions - but with your enthusiastic drive - you just need to get your hands dirty. Get one of the lyra boards they all have external ADC/DAC and get going using one of the examples from the ESP-ADF framework. From there you can think about how to implement your application. ...
by Jakobsen
Mon Feb 24, 2020 9:06 pm
Forum: ESP-IDF
Topic: Using opus decoder with ESP-IDF 4.x
Replies: 7
Views: 10369

Re: Using opus decoder with ESP-IDF 4.x

Hi Dave
I have a working libopus component that I am using in a PoE streaming project running on the WESP32 PoE board.
Let me know if you want a link.
/J
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: 6311

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: 18
Views: 33328

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: 9929

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: 5989

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: 5989

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: 6018

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