How can we modify RECORD mode?
 

Prior to initiating this thread I went through this forum and several other fora looking for information I am after for no avail.

I own an ipod nano clone 1.5", with even the "ipod" tag on it, sold as 8G in China, but having Hynix HY27UH081G2M inside, no FM, built in mic for voice recording. It runs on ATJ2085 with fw dump 3.5.37

I have a few questions mainly related to voice recording.

The ATJ2085 data sheet indicates "Support Stereo 16-bit Sigma-Delta ADC for Microphone/FM Input, sample rate at 8/12/16/22/24/32/48KHz". The best I can get is 32k in voice recording as at present.

Anyway I wonder whether 32k means kilo-samples-per-second (with whatever bit depth) or just kilo-bits-per-second.

When I extracted my fw and unpacked it, I can see RECORD.AP and MP3ENC.DSP in FW directory. Here I assume voice recording is handled by RECORD.AP and MP3ENC.DSP does mp3 encording.

1. Is there a way of disassembling and modifying RECORD.AP to get 48k enabled in voice recoring?

2. Can I call MP3ENC.DSP somehow (maybe in RECORD.AP) to get voice recorded in mp3 instead of wav?

Problem solved - How can we modify RECORD mode?
 

Both of my questions are well answered by Wilson company in their firmware version 9.0.48 for nano clones.

It is capable of going up to 192kbps in recording now and also capable of saving in mp3.

I'm glad that no one here had to burn his fingure answering me.