The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2018
Filed:
Oct. 12, 2017
Motorola Solutions, Inc., Chicago, IL (US);
MOTOROLA SOLUTIONS, INC., Chicago, IL (US);
Abstract
A device and method for lower latency digital audio sample playback is provided. The device comprises: a hardware digital signal processor (DSP); higher and lower latency audio paths to the DSP; a kernel driver; a kernel random-access memory (RAM) including kernel RAM buffers accessible by the kernel driver; and a controller. The controller: prior to digital audio samples being used by an application, pre-loads, using the kernel driver, the samples at the kernel RAM buffers; responsive to a trigger in the application to play a given digital audio sample, determines, using a sample identifier of the given sample, whether the given sample is pre-loaded at the kernel RAM buffers; when the sample is pre-loaded, plays, using the DSP, the given sample via the lower latency path; and when the given digital audio sample is not pre-loaded, plays, using the DSP, the given sample via the higher latency path.