Sound Lab 1.2.2

Sound Lab 1.2.2 adds MP3 Layer III decoding on the Teak DSP.

• Stream MP3 through the existing audio API.
• Compare DSP and ARM11 decoding in Sound Lab.
• Live decoder and DSP-load monitor, plus reduced Delay overhead.

Install the CIA or use the 3DSX/SMDH with the Homebrew Launcher. Put WAV/AAC/MP3 files in sdmc:/3ds/opendsp-lab/. AAC and MP3 use the DSP by default; press X in the player to switch to ARM11.

MP3 supports MPEG-1 Layer III, mono/stereo, 32/44.1/48 kHz and 32-320 kbit/s.
See MP3 formats and API and the streaming guide.

Sound Lab 1.2.1

Sound Lab 1.2.1 uses the new streaming API for WAV and AAC playback.

• Stream audio from SD or RomFS in your own games.
• Lower AAC memory use and less streaming overhead.
• Queue and underrun counters in Sound Lab.

Install the CIA or use the 3DSX/SMDH with the Homebrew Launcher. Put WAV/AAC files in sdmc:/3ds/opendsp-lab/. AAC uses the DSP by default; press X to switch to ARM11.

See the streaming guide for the API and example.

Sound Lab 1.2.0

Sound Lab 1.2.0 adds AAC-LC playback on the Teak DSP, alongside the mixer, reverb and delay.

• AAC uses the DSP by default. Press X in the player to switch to ARM11.
• The player shows the active backend and total DSP load.
• Decoder scheduling, FFT, Huffman, TNS and output processing have been optimized without changing PCM output.

Install the CIA or use the 3DSX/SMDH with the Homebrew Launcher. Put WAV/AAC files in sdmc:/3ds/opendsp-lab/.

DSP decoding supports AAC-LC ADTS, mono/stereo, 8–48 kHz and one block per frame. ARM11 remains available for higher rates and multi-block files. See AAC.md.