Lines Matching full:warmup
1 page.title=Audio Warmup
27 <p>Audio warmup is the time it takes for the audio amplifier circuit in your device to
29 to audio warmup time are power management and any "de-pop" logic to stabilize
33 <p>This document describes how to measure audio warmup time and possible ways to decrease
34 warmup time.</p>
36 <h2 id="measuringOutput">Measuring Output Warmup</h2>
39 AudioFlinger's FastMixer thread automatically measures output warmup
41 At warmup, FastMixer calls <code>write()</code>
43 FastMixer determines audio warmup by seeing how long a Hardware Abstraction
47 <p>To measure audio warmup, follow these steps for the built-in speaker and wired headphones
48 and at different times after booting. Warmup times are usually different for each output device
57 <li>Run the following command to receive the measured warmup:
83 you will see a lower warmup time than the mean value.
88 <h2 id="measuringInput">Measuring Input Warmup</h2>
91 There are currently no tools provided for measuring audio input warmup.
92 However, input warmup time can be estimated by observing
98 <h2 id="reducing">Reducing Warmup Time</h2>
101 Warmup time can usually be reduced by a combination of:
105 <li>Performing independent warmup operations concurrently rather than sequentially</li>
111 need to tradeoff between low warmup time versus
