Audio Signal Visualizer with Spartan 6

audio visualizer with Spartan FPGA
	Spartan 6 48kHz 96kHz 192kHz sample rates 1280x1024 VGA 1600x1200 DVI 1920x1080 HDMI 48kHz 96kHz 192kHz Audio DSP	Base Hardware Unit Spartan 6 FPGA board The Trenz Spartan 6 board is used to implement a graphical visualization of the incoming digital audio. The board analyzes the digital audio data from S/PDIF or I2C. Mouse an keyboard control is available too. Graphical Audio Visualizer The 5-bit-VGA interface with dithering is used to generate a HDTV-like signal of 1920x1080 resolution with a refresh rate of either 50Hz or 60Hz. Also 1600x1200 resolution is possible. The smaller format of SXVGA 1280x1024 can be run with up to 120Hz clock frequency. See my VGA-Core project at www.mikrocontroller.net The audio analysis is performed by the audio2midi-unit of the FPGA-DSP. Unlike I did it in the former version, the analog representation of the audio is now fully digitally done by displaying on a virtual oscilloscope. An optimized FFT-analysis of the pre-filtered audio data is performed to detect the detailed frequency and display it at the virtual keyboard. The audio data is used to create visual effects in the background. Click here to see the former version of the visualizer