5.4.4 Desktop hands-free UE receiving
26.1313GPPRelease 18RequirementsTerminal acoustic characteristics for telephonyTS
The receiving sensitivity frequency response from the SS audio input (analogue or digital input of the reference speech encoder of the SS) to the free-field shall be as follows:
The receiving sensitivity frequency response shall be within the mask which can be drawn with straight lines between the breaking points in table 4 on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 4: Desktop hands-free receiving sensitivity/frequency mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
200 |
6 |
|
|
315 |
6 |
-9 |
|
400 |
6 |
-6 |
|
3 100 |
6 |
-6 |
|
4 000 |
6 |
|
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
Figure 4: Desktop receiving sensitivity/frequency mask
Compliance shall be checked by the relevant test described in TS 26.132.