topic Re: K22/K64 HE-AAC audio codec in Kinetis Microcontrollers

K22/K64 HE-AAC audio codec

isaotakashima — Thu, 17 Nov 2016 01:13:24 GMT

Our customer would like to implement HE-AAC audio codec into their system using K22 or K64.

Could you please let us know NXP recommended HE-AAC audio codec.

Please reply as soon as possible.

Best regards,

Takashima

Re: K22/K64 HE-AAC audio codec

xiangjun_rong — Fri, 18 Nov 2016 03:02:32 GMT

Hi, Takashima,

Regarding your question, I have googled with the key words "HE-AAC", this is the explanation:

High-Efficiency Advanced Audio Coding - Wikipedia

The HE-AAC is audio coding format, user can recover the HE-AAC data to PCM stream and output the PCM stream to codec via I2S data format via SAI interface. User can get the data with HE-AAC format via USB, SAI input module...

I think the codec device is an ADC or DAC, it can not receive HE-AAC data format directly usually, the Codec can only receive PCM data format with I2S protocol. The processor should recover to PCM from HE-AAC data stream.

the K64 and K22 have SAI interface, it can receive/transmit data via I2S protocol.

Hope it can help you

Xiangjun Rong

Re: K22/K64 HE-AAC audio codec

isaotakashima — Fri, 18 Nov 2016 08:30:21 GMT

Dear Xiangjun Rong

Thank you for your reply.

I found out below link regarding the AAC audio codec.

NXP - Partner Profile Information

This middle ware seems to support HE-AAC with Kinetis-K series.

Could you please let us know feature of this middle ware.

Best regards,

Takashima

Re: K22/K64 HE-AAC audio codec

xiangjun_rong — Mon, 21 Nov 2016 02:31:21 GMT

Hi, Takashima

The Picustech Software is a third party company, I do not know the detail of the software, pls ask the Picustech Software directly.

Xiangjun Rong