VSDSP Forum

Hello! The .img files containing the VS1053 Ogg Vorbis encoder plugin are approximately 40 KiB of size. That means that sending the encoder through SPI at 10 Mbit/s will take 64 milliseconds even taking about the 100% SPI overhead you get if you don't use SCI Multiple Write. If using SCI Multiple Wr...

Hello! Attached to this message is a simple audio input selector and loopback program for VS1005 / VSOS. It lets the user select from several stereo / mono inputs, and outputs to stdaudioout. Also a volume control is included. By using the configuration provided in the README.TXT file also a simulta...

Hello all! It is with great pleasure I present you an all-new signal processing algorithm: the Guitar Amplifier Simulator GuitAmp.dl3. GuitAmp is a parametric distortion DSP algorithm that lets the VS1005 run different stages of amplification, distortion, and equalization, to simulate an electric gu...

Hello! Attached to this message is the VS1005 HiRes Recorder release 0.51. Hope you enjoy it! We have also just released the VS1005 BreakOut Board Mark II, which supports the recorder. It is available from here: http://www.vlsi.fi/en/support/evaluationboards/vs1005breakoutboardmk2recorder.html Kind ...

Hello! Wew have a new version of the AAC decoder. It is an early test release that has support for playing MPEG-DASH (Dynamic Adaptive Streaming over HTTP) AAC files. To try the decoder, unzip the attached file decaac.zip, then copy the resulting decaac.dl3 to your S:SYS/ directory. If you try this ...

Hello! Yes, we have made an 8 SD card daughterboard to the VS1005 Developer Board. The HiRes recorder for that board is under debugging at the moment. I expect we can release the board and software in late August. It contains 8 microSD connectors and our 4 Mbit SRAM IC VS23S040 for buffering. We hav...

Hello! We have something new and exciting for everyone using the FM radio receiver of VS1005, namely the FM Stereo Radio Noise Killer ! Because of the way stereo information is transmitted on FM radio, stereo reception is always more suscept to white noise and other artifacts than mono. A way to red...

Hello! So far our audio decoders, like MP3 and Ogg Vorbis have been all closed source. While this is necessary for us, it makes it difficult for third parties to create their own audio decoders because there really are no examples on how to do this. To help with the issue, we have created a simplifi...

Hello Rob! VS1005 audio drivers support 32-bit or 16-bit audio. There is no 24-bit option. If you want to record to a file that is 24 bits, then you need to set the audio drivers to 32-bit mode, then strip and rearrange the bytes to the little-endian format required by RIFF files. Below you will fin...

Hello! I have found the reason and I have a recommended solution to your problem. Open up the VSOS 3.55 solution, then open the file transient.c. Find the following line: SymbolAdd("_encMAlignBitsToByte", (void *)1, (int)EncMAlignBitsToByte); Change it to the following (lower case 'e' changes to upp...