Process for adjusting the sound volume of a digital sound recording

• US 20060265093A1
• Filed: 07/31/2006
• Published: 11/23/2006
• Est. Priority Date: 02/16/2000
• Status: Active Grant

• Current Assignee: TouchTunes Music Corporation (The Octave Music Group, Inc.)
• Original Assignee: TouchTunes Music Corporation (The Octave Music Group, Inc.)
• Inventors: Nathan, Guy, Dion, Dominique
• Granted Patent: US 7,519,442 B2
• Time in Patent Office: Days
• US Class Current: 700/94
• CPC Class Codes: G11B 20/10009 Improvement or modification of read or write signals
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10546 specifically adapted for audio data
• CPC Class Codes: H03G 3/20 Automatic control H03G3/005 takes precedence; combined with volume compression or expansion H03G7/00
• CPC Class Codes: H03G 3/3089 Control of digital or coded signals

Abstract

The present invention relates to a process for adjusting the sound volume of a digital sound recording characterised in that it comprises: a step consisting of determining, in absolute values, for a recording, the maximum amplitude values for sound frequencies audible for the human ear, a step consisting of calculating the possible gain for a specified sound level setting, between the maximum amplitude value determined above and the maximum amplitude value for all frequencies combined, a step consisting of reproducing the recording with a sound card by automatically adjusting the amplification gain level making it possible to obtain a sound level for the recording of a specified value so that it corresponds to the gain calculated for this recording.

Claims

1-9. -9. (canceled)

10. System for adjusting the sound volume of a digital sound recording, comprising:

means for determining, in absolute values, for a recording, the maximum amplitude values for sound frequencies audible for the human ear,

means for calculating the possible gain (Gv) for a specified sound level setting, between the maximum amplitude value (A2) and the maximum amplitude value (Am) for all frequencies combined, the possible gain being determined by applying the following formula;

Gv=20log(A₂/Am),

means for reproducing the recording by automatically adjusting the amplification gain level making it possible to obtain a sound level for the recording of a specified value so that it corresponds to the gain calculated for this recording, the means for reproducing comprising a dynamic reproduction sound level adjustment function on the recording including authorizing a specified gain for the low-pitched and/or high-pitched sounds in the recording, the gain corresponding approximately to the attenuation applied during the production of the recording.