Search found 85 matches

by Jakobsen
Mon May 08, 2017 10:50 pm
Forum: Showcase
Topic: ESP32 Webradio
Replies: 185
Views: 158788

Re: ESP32 Webradio

Hi Buddy Nice work on the Bluetooth implementation - I have BT audio streaming up running with my 32 bit I2S interface to my MA12040P :-) Push in 4 extra bytes pr L/R samples set and got stable audio flow. But audio is very distorted / sounds more like playing what is left out in the joint_stereo se...
by Jakobsen
Thu May 04, 2017 8:42 pm
Forum: Showcase
Topic: ESP32 with RT-Thread and esp32radio :-)
Replies: 8
Views: 8238

Re: ESP32 with RT-Thread and esp32radio :-)

Hello Bernard

I will be very happy to test drive you code maybe add some dsp audio processing if you have any spare mips left :-)

Regards Jørgen
by Jakobsen
Tue Apr 18, 2017 1:19 pm
Forum: ESP-IDF
Topic: rtc_clk_apll_enable函数调用失败
Replies: 18
Views: 102173

Re: rtc_clk_apll_enable函数调用失败

Hi All Audio using normal PLL on rev_0 is OK for prototyping and to get the party started. Your will hear a 'hiss' type noise if you dare to face ear close to speaker. But when your crank up the volume, noise it is covered. Below 1KHz sine using 32 sample lookup table on ESP32 rev_0 PLL clock - 24bi...
by Jakobsen
Tue Apr 18, 2017 8:59 am
Forum: ESP-IDF
Topic: rtc_clk_apll_enable函数调用失败
Replies: 18
Views: 102173

Re: rtc_clk_apll_enable函数调用失败

Hi To my understand on rev_0 hardware the APLL resolution is not good enough for generating a 2.8224 Mhz i2s clock due to bug on sdm1 and sdm0. On rev_0 we can use normal PLL to generate i2s clock close to 2.822 MHz but it will have clock jitter. I did measurements on noise floor due to that clock j...
by Jakobsen
Mon Apr 17, 2017 7:32 pm
Forum: General Discussion
Topic: Audio Support
Replies: 12
Views: 36718

Re: Audio Support

Hi No I have not done extensive test on BT audio - Still working on Web mp3 streaming / DSP basic functions and optimizing of MIPS. I will let you message pass on to people in charge of sales. - I know we have been in a stage of limited / prioritized sampling - but that should be over by now. APLL i...
by Jakobsen
Mon Apr 17, 2017 6:46 pm
Forum: Showcase
Topic: ESP32 Webradio
Replies: 185
Views: 158788

Re: ESP32 Webradio

Hi Buddy Nice call - moving audio configuration to the menuconfig setup tool - very handy. And code works out of the box. Yes - I will send you a diagram for wiring up our amp. Do you have the small demo board or our evk - cannot recall what I send you? Small demoboard is 4x5cm - evk is 7x8cm with b...
by Jakobsen
Thu Apr 13, 2017 10:27 pm
Forum: General Discussion
Topic: Audio Support
Replies: 12
Views: 36718

Re: Audio Support

Yes
Nice job @Espressif - BT audio packages comming through

Image
by Jakobsen
Sun Apr 09, 2017 8:15 pm
Forum: Showcase
Topic: ESP32 Webradio
Replies: 185
Views: 158788

Re: ESP32 Webradio

Hi Buddy Hop you got some fresh air - I am jorgenkraghjakobsen at github - Stil working on by git foo - think I have seen the light at the end of the tunnel but still a couple of nights before I will get there. Just let me start to do a pull request - I only change 2 files and added 2. Still not sur...
by Jakobsen
Sat Apr 08, 2017 9:52 pm
Forum: Showcase
Topic: ESP32 Webradio
Replies: 185
Views: 158788

Re: ESP32 Webradio

Hi Buddy I have added 32 bit audio support and setup procedure for Merus audio amplifier. I have adds some files and commited the change to my local repo - Now I want to push the stuff to your master branch - what to do ? git push gives me access denied - other options. In my old develop branch i ha...
by Jakobsen
Fri Mar 31, 2017 8:46 am
Forum: Showcase
Topic: ESP32 Webradio
Replies: 185
Views: 158788

Re: ESP32 Webradio

Hi Buddy
Just did some simple ccount sampling pre and post code block. I have a float and a fixed point version of my DSP/Biquad. Initial did the profiling to learn dif between float and fixed math.
Look forward to see your re-factored code.
/j

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