5.4.3 Desktop hands-free UE sending
26.1313GPPRelease 18RequirementsTerminal acoustic characteristics for telephonyTS
The sending sensitivity frequency response from the MRP to the SS audio output (digital output of the reference speech decoder of the SS) shall be as follows:
The sending sensitivity frequency response shall be within the mask which can be drawn with straight lines between the breaking points in table 3 on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 3: Desktop hands-free sending sensitivity/frequency mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
‑12 |
|
|
200 |
0 |
|
|
300 |
0 |
‑12 |
|
1 000 |
0 |
‑6 |
|
2 000 |
4 |
‑6 |
|
3 000 |
4 |
‑6 |
|
3 400 |
4 |
‑9 |
|
4 000 |
0 |
|
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
Figure 3: Desktop hands-free sending sensitivity/frequency mask
Compliance shall be checked by the relevant test described in TS 26.132.