COMPOSITE AUDIO WAVEFORMS

• US 20120269364A1
• Filed: 07/02/2012
• Published: 10/25/2012
• Est. Priority Date: 01/05/2005
• Status: Abandoned Application

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Salvucci, Keith D.
• Application Number:
  US13/540,513
• Publication Number:
  US 20120269364A1
• Time in Patent Office: Days
• US Class Current: 381/119
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel

Abstract

A technique for aligning a plurality of media clips is provided. One or more intra-clip points of interest (POIs) are identified in at least a first media clip. When aligning a first point in the first media clip with a second point in a second media clip, the first point may be snapped to the second point, wherein at least one of the first point and second point is an intra-clip POI. When a snap occurs, at least one of a visual or audible indication is generated, such as a “pop” sound, a snap line, or automatically aligning the first point with the second point when the first point is within a specified number of pixels of the second point. Techniques for representing multiple channels of an audio clip as a single waveform and caching waveforms are also provided.

Claims

1. A method comprising:

generating a single audio waveform based on a plurality of audio channels within a media clip;

wherein the single audio waveform reflects a combined characteristic based on audio information from each of the plurality of audio channels; and

generating a depiction of the media clip based on the single audio waveform;

wherein the method is performed by one or more computing devices.

2. The method of claim 1, wherein the single audio waveform depicts the audio intensity of the media clip over time.

3. The method of claim 1, wherein generating the single audio waveform comprises coalescing two or more audio channels of the plurality of audio channels into one audio channel.

4. The method of claim 1, wherein generating the single audio waveform comprises reducing the number of audio samples in the media clip.

5. The method of claim 4, wherein reducing the number of audio samples in the media clip comprises using a sinc function.

6. The method of claim 1, wherein generating the single audio waveform comprises changing the bit depth of audio samples in the media clip.

7. The method of claim 1, wherein generating the single audio waveform comprises reducing the number of audio samples in the media clip and changing the bit depth of multiple audio samples in the media clip.

8. One or more non-transitory computer-readable media carrying instructions which, when executed by one or more processors, cause:

generating a single audio waveform based on a plurality of audio channels within a media clip;

wherein the single audio waveform reflects a combined characteristic based on audio information from each of the plurality of audio channels; and

generating a depiction of the media clip based on the single audio waveform.

9. The one or more non-transitory computer-readable media of claim 8, wherein the single audio waveform depicts the audio intensity of the media clip over time.

10. The one or more non-transitory computer-readable media of claim 8, wherein generating the single audio waveform comprises coalescing two or more audio channels of the plurality of audio channels into one audio channel.

11. The one or more non-transitory computer-readable media of claim 8, wherein generating the single audio waveform comprises reducing the number of audio samples in the media clip.

12. The one or more non-transitory computer-readable media of claim 11, wherein reducing the number of audio samples in the media clip comprises using a sinc function.

13. The one or more non-transitory computer-readable media of claim 8, wherein generating the single audio waveform comprises changing the bit depth of audio samples in the media clip.

14. The one or more non-transitory computer-readable media of claim 8, wherein generating the single audio waveform comprises reducing the number of audio samples in the media clip and changing the bit depth of multiple audio samples in the media clip.

15. An apparatus comprising:

one or more processors;

one or more storage media storing instructions which, when executed by the one or more processors, cause;

generating a single audio waveform based on a plurality of audio channels within a media clip;

wherein the single audio waveform reflects a combined characteristic based on audio information from each of the plurality of audio channels; and

generating a depiction of the media clip based on the single audio waveform.

16. The apparatus of claim 15, wherein the single audio waveform depicts the audio intensity of the media clip over time.

17. The apparatus of claim 15, wherein generating the single audio waveform comprises coalescing two or more audio channels of the plurality of audio channels into one audio channel.

18. The apparatus of claim 15, wherein generating the single audio waveform comprises reducing the number of audio samples in the media clip.

19. The apparatus of claim 18, wherein reducing the number of audio samples in the media clip comprises using a sinc function.

20. The apparatus of claim 15, wherein generating the single audio waveform comprises changing the bit depth of audio samples in the media clip.