5.4.6 Hand-held 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 6 on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 6: Hand-held hands-free receiving sensitivity/frequency mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
200 |
6 |
|
|
500 |
6 |
-9 (Note 2) |
|
630 |
6 |
-6 (Note 2) |
|
800 |
6 |
‑6 |
|
3 100 |
6 |
‑6 |
|
4 000 |
6 |
|
|
NOTE 1: All sensitivity values are expressed in dB on an arbitrary scale. NOTE 2: The values stated in the Table 6 for 500 and 630 Hz are listed for performance objective purposes. (not mandatory) |
||
Figure 6: Hand-held hands-free receiving sensitivity/frequency mask
Compliance shall be checked by the relevant test described in TS 26.132.
5.4.7 Electrical interface UE sending
The sensitivity/frequency characteristics shall be as follows:
The sending sensitivity frequency response measured at the electrical reference point shall be within a mask, which can be drawn between the points given in table 6a. The mask is drawn with straight lines between the breaking points in table 6a on a logarithmic (frequency) – linear (dB sensitivity) scale.
NOTE: A tilt above 1 kHz is to compensate for the mouth to microphone acoustic path when the microphone is assumed to be hanging on a headset on the side of the head.
Table 6a: Electrical interface sending sensitivity/frequency mask
|
Frequency (Hz) |
Upper limit |
Lower limit |
|
100 |
3 |
|
|
200 |
3 |
|
|
300 |
3 |
-3 |
|
1 000 |
5 |
-3 |
|
3 100 |
0 |
|
|
3 400 |
12 |
-5 |
|
4 000 |
12 |
|
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
Figure 6a: Electrical interface sending sensitivity/frequency mask
Compliance shall be checked by the relevant test described in TS 26.132.
5.4.8 Electrical interface UE receiving
The sensitivity/frequency characteristics shall be as follows:
The receiving sensitivity frequency response measured at the output of the electrical interface UE shall be within a mask, which can be drawn with straight lines between the breaking points in table 6b on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 6b: Electrical interface receiving sensitivity/frequency mask
|
Frequency (Hz) |
Upper limit |
Lower limit |
|
100 |
2 |
|
|
200 |
2 |
|
|
300 |
2 |
-6 |
|
1 000 |
2 |
-2 |
|
2 000 |
6 |
-2 |
|
3 400 |
6 |
-5 |
|
4 000 |
6 |
|
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
Figure 6b: Handset and headset receiving sensitivity/frequency mask
Compliance shall be checked by the relevant test described in TS 26.132.