2001 Audio Precision, a US audio test & measurement manufacturer,
asked Julian to write a book on digital audio measurement. This
book quickly became a definitive resource for design engineers working
in the field of digital audio the world over. In his classic tradition,
the book covered the subject material in sufficient depth to be
valuable to advanced readers while presenting the information in
a way that a novice could grasp the concepts. The book is in its
second printing in English; a Japanese translation was published
in February 2004.
Techniques for Digital Audio
is available from its publisher, Audio
Precision. The book focuses on the measurement of digital audio
signals, and examines in great detail both techniques used to evaluate
the performance of the converters and the digital interface signal
that carries the audio.
One, Jitter Theory, studies the causes and effects
of the interface timing variations called jitter with a
number of tests designed to characterize this problem.
Two, Analog-to-Digital Converter Measurements, looks
at key ADC parameters and behavior and includes 15 AP Basic macros
to run the necessary tests.
Three, Digital-to- Analog Converter Measurements,
does the same for DACs. A sidebar looks at dither. Twenty-five
macros are included.
Four, The Digital Interface, discusses the AES3/IEC60958
digital interface, examining the basic format and the means of
characterizing the signal. Sidebars focus on the international
standards and on synchronization considerations
is a PDF of the complete Table