IP Cores - logiAIR

Audio Infrared Digital FM Modulator

Key Features

  • Digital FM modulator for IR audio broadcast standard
  • Configurable as a stereo or mono FM modulator
  • Supports standard FM carrier frequencies           (2.3MHz, 2.8MHz, 3.2MHz, 3.8MHz)
  • Frequency deviation +/- 75 kHz
  • Optional digital filter for high frequency band accentuation
  • Supports all sample resolutions of the streaming video
  • Supports different sampling rates (22kHz, 32kHz, 44.1kHz, 48kHz, 96kHz, 192kHz)
  • Requires simple analog front-end
  • Fully embedded in Xilinx® Platform Studio and the EDK

Description

The logiAIR audio IR digital FM modulator is a very compact Xylon logicBRICKSTM IP core that converts digital stereo audio input into trains of digital pulses fed into a simple analog front-end emitter, placed externally to the Xilinx FPGA. The emitter is an IR LED that turns modulated audio signals into beams of the IR light. Standard IR headphones convert IR broadcasted audio into a clean sound. The logiAIR supports accentuation of higher frequencies recognized by standard wireless headphones and transmits audio signals with various sample resolutions and sampling rate frequencies. It can be easily interfaced to any source of the digital sound. The logiAIR is, like other IP cores from logicBRICKS IP library, fully embedded into Xilinx Platform Studio and the EDK. It can be easily customized and tuned for optimal slice consumption and features set. The logiAIR supports FM modulation of a single stereo audio channel, and more audio channels can be modulated by additional logiAIR instances within a single Xilinx FPGA.
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