Product Introduction: Audio Support for USB Host Stack

HCC-Embedded, a leading provider of software for embedded applications, today announced the release of USBH-Audio, a class driver for use with HCC’s USB Host stack.

EUSBH-Audio supports a full spectrum of audio features for embedded applications. Included are:

• FORMAT TYPE I (PCM/PCM8) streams
• FORMAT TYPE II (MPEG) streams
• Sampling rate adjustment to rate supported by the audio device
• Streaming type input terminal (playback)
• Streaming type output terminal (e.g., record from a microphone)
• AF Version 1.0 (full speed)
• Feature unit: volume/mute control, tone control, graphic equalizer, bass boost, loudness, etc.
• Processing unit: up/down mix, Dolby prologic, 3D stereo extender, reverberation, chorus, dynamic range compression, extension
• Selector unit support (switch between line in/microphone)
• Mixer unit

USBH-Audio can be used with any HCC USB host controller firmware. EHCI, OHCI and non-standard hosts are supported.

HCC-Embedded can supply custom audio class drivers, no matter how complex the audio controls are.

USBH-Audio is part of HCC-Embedded’s comprehensive set of USB offerings, which include the USBH host stack and USBD device stack. Available drivers for USBH include MS (mass storage, PL (printer), CDC, HID, FTDI, Audio and Midi. For USBD, there are MS, MTP, CDC, HID and RFI.