From version 1.1
edited by SandrineAvakian
on 2017/01/11 17:41
To version 2.1
edited by SandrineAvakian
on 2017/01/12 10:59
Change comment: There is no comment for this version

Summary

Details

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1 -MediaWiki 1.6
1 +XWiki 2.1
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1 -=Devices=
2 -{| class="wikitable" style="text-align: center"
3 -!colspan="9"|Audio latency
4 -|-
5 -!colspan="1"|Device
6 -!colspan="1"|Recorder
7 -!colspan="1"|Player
8 -!colspan="3"|Latency*
9 -!colspan="3"|Latency with Fast Track**
10 -|-
11 -|rowspan="1"|HTC 0PCV1
12 -|C++
13 -|C++
14 -|colspan="3"|346ms
15 -|colspan="3"|-
16 -|-
17 -|rowspan="3"|LG G5
18 -|Java
19 -|Java
20 -|colspan="3"|235ms
21 -|colspan="3"|-
22 -|-
23 -|Java
24 -|OpenSles
25 -|colspan="3"|130ms
26 -|colspan="3"|124ms
27 -|-
28 -|OpenSles
29 -|OpenSles
30 -|colspan="3"|113ms
31 -|colspan="3"|-
32 -|-
33 -|rowspan="3"|Nexus 6
34 -|Java
35 -|Java
36 -|colspan="3"|260ms
37 -|colspan="3"|-
38 -|-
39 -|Java
40 -|OpenSles
41 -|colspan="3"|155ms
42 -|colspan="3"|150ms
43 -|-
44 -|OpenSles
45 -|OpenSles
46 -|colspan="3"|110ms
47 -|colspan="3"|110ms
48 -|-
49 -|rowspan="1"|Samsung S4 Mini
50 -|C++
51 -|C++
52 -|colspan="3"|269ms
53 -|colspan="3"|-
54 -|-
55 -|rowspan="3"|Samsung S5
56 -|Java
57 -|Java
58 -|colspan="3"|340ms
59 -|colspan="3"|-
60 -|-
61 -|Java
62 -|OpenSles
63 -|colspan="3"|260ms
64 -|colspan="3"|-
65 -|-
66 -|OpenSles
67 -|OpenSles
68 -|colspan="3"|260ms
69 -|colspan="3"|-
70 -|-
71 -|rowspan="3"|Samsung S6
72 -|Java
73 -|Java
74 -|colspan="3"|270ms
75 -|colspan="3"|-
76 -|-
77 -|Java
78 -|OpenSles
79 -|colspan="3"|320ms
80 -|colspan="3"|123ms
81 -|-
82 -|OpenSles
83 -|OpenSles
84 -|colspan="3"|280ms
85 -|colspan="3"|112ms
86 -|-
87 -|rowspan="3"|Samsung S7
88 -|Java
89 -|Java
90 -|colspan="3"|182ms
91 -|colspan="3"|-
92 -|-
93 -|Java
94 -|OpenSles
95 -|colspan="3"|272ms
96 -|colspan="3"|130ms
97 -|-
98 -|OpenSles
99 -|OpenSles
100 -|colspan="3"|270ms
101 -|colspan="3"|-
102 -|}
103 - * Latency with the STREAM_VOICE_CALL mode
104 - ** To get the Fast Track we need to use STREAM_MUSIC mode instead of STREAM_VOICE_CALL. It's not a good idea because the volume control will not be the call volume, and no echo canceller.
105 -
106 -=How to check latency=
107 -==Requirements==
108 -*A computer with [http://www.audacityteam.org/ Audacity] and a microphone
109 -*Linphone with the echo tester in audio settings
110 -==Use Audacity==
111 -You need to launch Audacity, launch Linphone on the device you want to test.
112 -<br>On Linphone click on Echo tester to run it. On Audacity, click on the rec button like here:<br>
113 -[[File:Rec-button.png]]
114 -<br>Afterwards, place your device near the microphone of your computer and make a short noise. Your computer and your device should hear this, and the device will repeat it on his speaker for the computer microphone. Stop the record and you should have a graph like that:<br>
115 -[[File:Screen-exemple.png| 600px]]
116 -<br>To measure the latency, you need to select the beginning of the first pick to the beginning of the next pick.<br>Select "length" and you will have the device audio latency.<br>
117 -[[File:Screen-exemple-selection.png| 600px]]