7.4.3 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 23 on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 23: Desktop hands-free sending sensitivity/frequency mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
[3…5] |
|
|
200 |
[3…5] |
[-3…-5] |
|
5000 |
[3…5] |
[-3…-5] |
|
12500 |
[3…5] |
[-5…-7] |
|
16000 |
[3…5] |
|
|
NOTE 1: All sensitivity values are expressed in dB on an arbitrary scale. NOTE 2: Values within [] are provisional and expected to be defined as single values based on future studies. |
||
It is recommended as a performance objective that the sending sensitivity/frequency response be within the mask which can be drawn with straight lines between the breaking points in table 24.
Table 24: Desktop hands-free sending sensitivity/frequency performance objective mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
[3] |
|
|
200 |
[3] |
[-3] |
|
5000 |
[3] |
[-3] |
|
12500 |
[3] |
[-5] |
|
16000 |
[3] |
|
|
NOTE 1: All sensitivity values are expressed in dB on an arbitrary scale. NOTE 2: Values within [] are provisional and expected to be confirmed, revised or removed based on future studies. |
||
TBD
Figure 18: Desktop hands-free sending sensitivity/frequency masks
Compliance shall be checked by the relevant test described in TS 26.132.