Product Details

This library for the Blackfin and SHARC processors is an implementation of support for handling of WAV files and PCM data stored in files.

Features

  • Supports circular buffering
  • Conversion between floating and packed fixed point representation can be done on the fly as audio data is read from or written to a file, or done on buffered audio data stored in DSP memory
  • Parses RIFF headers found in WAV files
  • Writes RIFF headers in order to create WAV files
  • Supports the WAVE Extensible Format
  • Conversion between floating point PCM representation (as typically used on SHARC) and packed fixed point representation (as stored in the audio files)
  • Handles 16/24/32 bits packed fixed point representation and 32 bit floating-point representation per sample per sample
  • Supports the Blackfin® ADSP-BF5xx/ADSP-BF60x and SHARC® ADSP-214xx/ADSP-2136x processor families

Product Downloads

System Requirements

  • Windows XP Professional SP3 (32-bit only).
  • Windows Vista Business/Enterprise/Ultimate SP2 (32-bit only). It is recommended to install the software in a non-UAC-protected location.
  • Windows 7 Professional/Enterprise/Ultimate (32 and 64-bit). It is recommended to install the software in a non-UAC-protected location.
  • Windows 8 Professional/Enterprise (32 and 64-bit). It is recommended to install the software in a non-UAC-protected location.
  • Minimum of 2 GHz single core processor, 3.3 GHz dual core is recommended.
  • Minimum of 1 GB memory (RAM), 4 GB is recommended.
  • Minimum of 2 GB hard disk (HDD) space is required.
  • CrossCore® Embedded Studio latest release (preferred), or VisualDSP++ 5.1 for Analog Devices processors and its latest update.

Performance Metrics

Memory summary:

Processor Family Code memory (KiB) Data RAM (KiB) Constant Data Tables (KiB)
ADSP-2136x 14.1 0.25 0.1
ADSP-214xx 10.4 0.25 0.1
ADSP-BF5xx 6.7 0.6 0.1

  • Data RAM for one instance includes Stack, Scratch, Instance/Stage, Minimum Input and Output Single Buffers.
  • 1 KiB = 1024 Bytes.

MIPs summary:

Library Component ADSP-21369 (KiB) ADSP-BF533
WAV Parsing 156 Cycles/Byte 218 Cycles/Byte
Fix packed to Float PCM Conversion 3.0 MIPS 19 MIPS
Float to Fix packed PCM Conversion 3.6 MIPS 20 MIPS
Fix packed to fix 32-bit PCM Conversion 3.0 MIPS 4.5 MIPS
Fix 32-bit to fix packed PCM Conversion 3.5 MIPS 5 MIPS

  • This table highlights example SHARC and Blackfin processors and approximate MIPS performance per channel. Some processors with high speed external memory interfaces (32-bit versus 16-bit or DDR versus SDRAM) can help reduce overall MIPS requirements.
  • The performance is similar regardless of the bit-width in the packed format.
  • PCM Conversion MIPS is measured by assuming sampling frequency is 48 KHz.
  • WAV parser performance is measured by using general 44-byte header wave files.

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Availability and Licensing

Each module supports the Analog Devices, Inc. (ADI) Blackfin or SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign or accept a license agreement with ADI prior to being shipped or downloading the modules identified in the license agreement.

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