BIOMETRIC AUDIO SECURITY

• US 20150025889A1
• Filed: 02/19/2014
• Published: 01/22/2015
• Est. Priority Date: 02/19/2013
• Status: Active Grant

• Current Assignee: Max Sound Corporation
• Original Assignee: Max Sound Corporation
• Inventors: Trammell, Lloyd, Schwartz, Lawrence
• Granted Patent: US 9,679,427 B2
• Time in Patent Office: Days
• US Class Current: 704/246
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G07C 9/32 in combination with an identity check
• CPC Class Codes: G10L 17/00 Speaker identification or verification techniques
• CPC Class Codes: G10L 17/02 Preprocessing operations, e.g. segment selection; Pattern representation or modelling, e.g. based on linear discriminant analysis [LDA] or principal components; Feature selection or extraction
• CPC Class Codes: G10L 21/0316 by changing the amplitude
• CPC Class Codes: G10L 25/51 for comparison or discrimination

Abstract

A biometric audio security system comprises providing an input voice audio source. The input audio is enhanced in two or more harmonic and dynamic ranges by re-synthesizing the audio into a full range PCM wave. A hardware key with a set of audio frequency spikes (identifiers) with varying amplitude and frequency values is provided. The enhanced voice audio input and the key using additive resynthesis are summed. The voice and the spike set is compared against the users identification signature to verify user'"'"'s identity. The set of audio spikes are user specific. The spikes are stored on the protected key device as a template, which would plug into the system. The template is determined by the owner/manufacturer of the system. The spikes are created and identified using the additive synthesis technique with a predetermined number of partials (harmonics). The identifiers include both positive and negative values. The amplitude and frequency values are spaced in very fine intervals. The enhancing of voice audio input includes the parallel processing the input audio as follows: A module that is a low pass filter with dynamic offset;

An envelope controlled band-pass filter; A high pass filter; Adding an amount of dynamic synthesized sub bass to the audio; and combining the four treated audio signals in a summing mixer with the original audio.

Claims

1. A biometric audio security system comprising:

Providing an input voice audio source;

Enhancing the voice audio input in two or more harmonic and dynamic ranges by re-synthesizing the audio into a full range PCM wave;

Providing a hardware key with a set of audio frequency spikes (identifiers) with varying amplitude and frequency values.

Summing the enhanced voice audio input and the key using additive resynthesis.

Comparing the voice and the spike set against the users identification signature to verify user'"'"'s identity.

2. The system of claim 1 wherein the set of audio spikes are user specific.

3. The system of claim 1 where in the spikes are stored on the protected key device as a template, which would plug into the system.

4. The system of claim 3 where in the template is determined by the owner/manufacturer of the system.

5. The system of claim 1 wherein the spikes are created and identified using the additive synthesis technique with a predetermined number of partials (harmonics).

6. The system of claim 1 wherein the identifiers include both positive and negative values.

7. The system of claim 1 wherein the amplitude and frequency values are spaced in very fine intervals.

8. The system of claim 1 wherein the enhancing of voice audio input includes the parallel processing the input audio as follows:

A module that is a low pass filter with dynamic offset;

An envelope controlled bandpass filter;

A high pass filter;

Adding an amount of dynamic synthesized sub bass to the audio;

Combining the four treated audio signals in a summing mixer with the original audio.