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Digital and Streaming Audio:
Applications, Algorithms, and Implementation
A full-day BDTI seminar
Designed to demystify the technologies that are revolutionizing the delivery of audio content
- Explores key emerging markets for digital audio technology
- Presents the fundamentals of digital audio signal processing and psychoacoustics
- Explains important audio processing algorithms
- Presents hardware and software implementation options
- Highlights important processor requirements
- Details compression standards and algorithms
- Explores system architectures for key product categories
- Identifies critical technology and market trends
- Provides design and implementation guidance for processor and system designers
AVAILABLE ON-SITE OR ONLINE
Contents
Suddenly, twenty years after the introduction
of the compact disc, digital audio has begun to appear in an extremely
wide range of consumer devices. From cable set-top boxes and digital audio broadcast,
to portable digital audio players and DVD, digital audio is becoming ubiquitous.
Digital Audio: Applications, Algorithms,
and Implementation presents insights into the aspects of digital audio
that are most important to developers and users of microprocessors. Examining
digital audio from a technical perspective, the class explores the technology
enabling emerging high-volume audio and multimedia products. It explains
algorithms and implementation techniques, and highlights the processor
features needed to support digital audio applications.
Introduction
- Definition, advantages of digital audio
- High-level overview of hot digital audio products
- et-top boxes, games, solid-state audio, digital radio
Key concepts in digital audio
- PCM (Pulse Code Modulation)
- Sample rates
- Quantization, distortion, and the 16-bit question
- Converting from analog to digital and back
Categorizing audio quality
- CD, telephone, PC multimedia, and professional
Implementation
- Custom, semi-custom, off-the-shelf solutions
- Programmable vs. fixed-function
- What's available; advantages and disadvantages
Audio processing
- Mixing
- Sample-rate conversion: why, how
- Saturation, amplitude scaling
- Special effects, e.g. echo and reverb
- 3D audio (e.g., Dolby 5.1-channel surround)
- Music synthesis
- Secure distribution of content
A detailed look at audio compression
- Why compress?
- Key attributes of compression techniques<
- Common compression algorithms—MPEG, Dolby AC-3, etc.
- Key concepts—psychoacoustics, DSP used for compression
- What goes into encoders and decoders
- Comparison of common algorithms
- Implementation issues: precision, MIPS, and memory
- Creating your own implementation
- Listening tests
Hot products revisited
- Technical requirements
- Implementation considerations
Conclusions, trends
Berkeley Design Technology, Inc (BDTI) is a technical services
and software company focused on DSP technology. BDTI is
well-known for developing the only vendor-independent set of
DSP benchmarks, the BDTI Benchmarks™, which it has
implemented on nearly every processor used in DSP today. BDTI
provides DSP software development and optimization services,
published reports on DSP technology, and DSP technical
advisory services.
For more information about this and other BDTI
training classes, including availability of online
versions and schedules for public presentations, please
register with BDTI.
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