Patent for Sale:

Authentic Reproduction of Acoustic Signal    

The patented method may be applied to the reproduction of the acoustic signal in an audio reproduction room substantially identical to the original acoustic signal.

Overview

The method is used to complete a basic ability for audio recording and playback-precision repetition for any acoustic performance in various conditions for all possible applications.

The method involves testing the features of a three-dimensional sound field using a dual or multi-channel system of spatially distributed channels, transmitting audio signals, and recording the responses in order to determine the differences between the influence of the natural acoustical properties of a room and the influence of the mutual spatial arrangement of audio sources and audio receivers on the characteristics of the sound field. Determining the differences between the features of the three-dimensional sound fields at different recording and reproduction conditions in accordance with this method makes it possible to adjust the parametric data of the spatial characteristics when reproducing an audio recording in order to produce a sound field identical to the sound field of the recording.

Primary Application of the Technology

Recording and reproducing of acoustic performances, authentic reproducing of studio records

The Problem Solved by the Technology

According to this method, the determination of distinctions in the primary and secondary spatial sound fields allows for accounting and correction of parametric data of the specificity and distinctive features of the acoustical environment, and their influence on the sound pattern of the sound sources in different conditions for obtaining the secondary sound field parametrically similar to the primary field.

How the Technology Solves the Problem

Comparative analysis of the reference signal, and of the primary and secondary response signals;
comparative analysis, and computer modeling and correcting of the parametric data on the specificity and distinctive features of the influence of acoustical environment on the sound field in the audio recording and reproduction rooms;
A basic feature of the newly implement method :
interrelated correction filter transfer function for all channels with general basic parameters on the specificity and distinctive features of the influence of acoustical environment on the sound field:
1) allows simulation of the distribution of sound waves and of producing of sound fields in various acoustic conditions (sound distribution is calculated by available methods of tracing paths through the spatial location of a sound reflecting elements of the acoustic environment, sound sources and receptors and through signals reflection properties (acoustic characteristics), methods of numerical modeling of the interaction of sound waves based on the Navier-Stokes);
2 ) allows a comparison of models of primary and secondary sound fields;
3 ) allows overall adjustment for correction (filters optimization) of interaction of all channels on base of the comparison of response signals and checking matching original sound field and reproducing sound field modeled based on parametric data on the specificity and distinctive features of the influence of acoustical environment on the sound field (primary sound field and its emulation field in the secondary room);

Competitive Advantage

The advantage of the method is the use of prior art in the audio recording-playback and assessment of acoustic environment technics level, the auxiliary data transmission for audio recording and playback with a reliable account of the properties of the acoustic environment, and computer modeling of sound waves.

Innovation of this method allows coverage and integration of many different solutions for audio recording playback up to standardization of existing and promising new technologies for audio playback.

The seller may consider selling these patents individually.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 700: Data Processing: Generic Control Systems Or Specific Applications

This class is structured into two main divisions: (1)for the combination of a data processing or calculating computer apparatus (or corresponding methods for performing data processing or calculating operations) AND a device or apparatus controlled thereby, the entirety hereinafter referred to as a "control system". (2)for data processing or calculating computer apparatus (or corresponding methods for performing data processing or calculating operations) wherein the data processing or calculating computer apparatus is designed for or utilized in a particular art device, system, process, or environment, or is utilized for the solution of a particular problem in a field other than mathematics (arithmetic processing per se is classified elsewhere).

Subclass 94: Digital audio data processing system

Class 381: Electrical Audio Signal Processing Systems And Devices

This class provides for: (a) wired one-way electrical transmission or processing systems for audio signals, (b) Stereophonic systems, which are not elsewhere classified, (c) instrument or process for converting an electrical audio information signal to or from humanly audible form.

Subclass 98: INCLUDING FREQUENCY CONTROL