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digital and mixed-signal design
A-D and D-A conversion
Phase locked loop and clock systems
Design for manufacture and test
ASIC prototyping using FPGA
|Digital Signal Processing||Filter
Unobtrusive processing and control
Time or frequency domain block processing
Signal processing algorithm development
|Testing and analysis||Performance
Interfacing standards compliance
209 Mill Road
Cambridge CB1 3AN
|Telephone:||+44 (0)1223 507741|
|Facsimile:||+44 (0)1223 560188|
Some clients have asked not to publicise the fact that they are nanophon clients. The following companies are happy to be listed here.
|Yamaha Corporation||Hamamatsu, Japan
We have undertaken the following projects either at nanophon or previously.
Small digital mixers for live broadcast applications.
Digital broadcast variable emphasis limiter for BBC Radio Three (1987).
Simple mixer/format converter for CD mastering applications.
Sub-sample variable delay unit for audio-video synchronisation.
Dynamic range controllers for broadcast.
Prototype loudspeaker distortion correction system.
Jitter tolerance/sensitivity test tool.
High performance (120 dB) A-D converter with noise-shaper.
Higher performance (130 dB) A-D converter module (with 32 bit output).
High performance multi-format precision D-A converter.
High performance 96 kHz D-A converter with custom filtering.
Jitter attenuation for IEEE1394 sample clock transmission.
Interconnectivity problems with early AES3 implementations.
Testing the reliability of coaxial MADI.
Disc-related playback differences in CD players.
Jitter sensitivity of high-end consumer D-A converters.
Subtle digital brick-wall filter artefacts.
IEEE1394 isochronous channel jitter.
Nanophon took an active interest in the development of digital audio standards and supported that development through contributions in the relevant AES and IEC TC100 standards working groups. This included contributing towards the following new standards and specifications.
Interface standards and specifications
AES5 Preferred sampling frequencies
AES11 Synchronization of digital audio equipment in studio operations
Draft AES42 Digital interface for microphones
IEC60958-1 Digital audio interfacePart 1: General
IEC60958-3 Digital audio interfacePart 3: Consumer applications
IEC60958-4 Digital audio interfacePart 4: Professional applications
IEC61883-1 Consumer audio/video equipmentDigital interfacePart 1: General
IEC61883-6 Consumer audio/video equipmentDigital interfacePart 6: Audio and music data transmission protocol
IEC61937 Interface for non-linear PCM encoded audio bitstreams applying IEC 60958
1394 Trade Association Enhancement to Audio and Music Data Transmission Protocol
IEC61606Audio and audiovisual equipmentDigital audio partsBasic methods of measurement of audio characteristic