Trinnov Audio have developed a unique and recognized expertise in the new scientific area of Digital Acoustics (measurement, analysis and processing of acoustic fields, in 3D), please see AES preprints 5717, 6116, 6231 and 6375.
We offer consulting and design services for advanced audio solutions.
Our service possibilities range from customization of our existing solutions to full design from scratch.
Areas of Expertise
Our consulting offering consists of the following expertise areas:
Acoustic Measurement & Analysis
- Room response, in 3D, for acoustic evaluation and simulation,
- Localization of loudspeakers in 3D (azimuth / distance / elevation),
- Directivity of microphones and loudspeakers (in 3D and with high spatial resolution).
Sound Reproduction
- Acoustic simulation using headphones,
- Reproduction of 3D sound using tens or even hundreds of loudspeakers (any configuration is possible),
- Loudspeaker/room acoustics optimization, based on the industry-leading Trinnov Optimizer.
Microphone Arrays
- Design of highly directional microphone,
- Design of microphones with specific directivity patterns,
- 2D and 3D microphone arrays, such as our highly innovative Trinnov SRP for 5.1 recording.
DSP Implementation
The port of our Optimizer technology to some of the industry-leading DSP platforms - Texas Instruments C6xxx and Analog Devices Sharc - has provided us with a strong experience on the development tools and implementation details. Today, this allows us to provide DSP implementation consulting services to fellow audio manufacturers on these platforms.
Tools
Over the years, Trinnov's R&D team has developed a unique set of "secret weapons" that are at the cutting edge of acoustic field and digital signal processing techniques. These tools include:
- our 3D Measuring Probe, based on a 24 capsules microphone array, for acoustic field analysis,
- our highly accurate Impulse response measurement software, including a fully calibrated microphone,
- our finely tuned Convolution Engine, for advanced digital acoustics processing,
- our state-of-the art Time-Frequency analysis software, based on the wavelet transform, and that we prefer over the more popular "waterfall" diagrams.
Reference Projects
Acoustic Simulation in Renault's Technocentre at Aubevoye
The engineers responsible for the acoustic design can perform A/B comparisons between the acoustic performance of multiple Renault models. The goal is to evaluate the sound reproduction throught the car receiver in a variety of cars in order to guarantee consistent quality throughout each product range. The system can be described as follows:
- one customized Optimizer, running as a convolution engine, plays the audio samples and applies the impulse response of each car,
- a second Optimizer, used as loudspeaker manager, performs the loudspeaker/room acoustics optimization and bass management for two independent "rooms":
- room A consists of a set of 6 satellite loudspeakers and 5 sub woofers,
- room B offers a set of ten headphones and 5 sub woofers.
Assessment of a WFS array at IRCAM
Thanks to our 3D measuring probe, which is ideal for high resolution analysis of spatial impulse responses, we've been able to finely analyze the first reflections caused by a WFS loudspeaker array. The goal was to determine whether a WFS system creates realistic first reflections in a room. For more information please read the AES Conference Paper 4-1.
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