7.4.2 Handset and headset UE receiving
26.1313GPPRelease 18RequirementsTerminal acoustic characteristics for telephonyTS
7.4.2.1 Handset UE receiving
The sensitivity/frequency characteristics shall be as follows:
The receiving sensitivity frequency response, measured either from the digital interface to the DRP with diffuse-field correction or from the SS audio input (analogue or digital input of the reference speech encoder of the SS) to the DRP with diffuse-field correction, shall be within a mask, which can be drawn with straight lines between the breaking points in table 19 on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 19: Handset receiving sensitivity/frequency requirement mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
5 |
|
|
200 |
5 |
-8 |
|
250 |
5 |
-5 |
|
5000 |
5 |
-5 |
|
12500 |
5 |
-11 |
|
16000 |
5 |
|
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
It is desired as a performance objective that the receiving sensitivity/frequency response be within the mask which can be drawn with straight lines between the breaking points in table 20.
Table 20: Handset receiving sensitivity/frequency performance objective mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
4 |
|
|
200 |
4 |
-4 |
|
250 |
4 |
-4 |
|
5000 |
4 |
-4 |
|
12500 |
4 |
-7 |
|
16000 |
4 |
|
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
Figure 16: Handset receiving sensitivity/frequency masks. The frequency response of the EVS codec operating as specified in TS 26.132 (super-wideband 24,4kbit/s, using the specified P.501 speech test signal), is plotted for reference, normalized to 0dB at 1kHz.
A UE operating in super-wideband mode shall pass the super-wideband requirements (i.e. when measured according to in 1/3rd octaves) as specified in Table 19, and shall also pass the wideband sensitivity/frequency characteristics requirements in the wideband range using the wideband measurement (i.e. measured in 1/12th octaves) as specified in Table 10.
Compliance shall be checked by the relevant test described in TS 26.132.
7.4.2.2 Headset UE receiving
The sensitivity/frequency characteristics shall be as follows:
The receiving sensitivity frequency response, measured either from the digital interface to the DRP with diffuse-field correction or from the SS audio input (analogue or digital input of the reference speech encoder of the SS) to the DRP with diffuse-field correction, shall be within a mask, which can be drawn with straight lines between the breaking points in table 21 on a logarithmic (frequency) – linear (dB sensitivity) scale.
Table 21: Headset receiving sensitivity/frequency requirement mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
[TBD] |
[TBD] |
|
200 |
||
|
250 |
||
|
5000 |
||
|
12500 |
||
|
16000 |
||
|
NOTE: All sensitivity values are expressed in dB on an arbitrary scale. |
||
It is recommended as a performance objective that the receiving sensitivity/frequency response be within the mask which can be drawn with straight lines between the breaking points in table 22.
Table 22: Headset receiving sensitivity/frequency performance objective mask
|
Frequency (Hz) |
Upper limit (dB) |
Lower limit (dB) |
|
100 |
[3] |
|
|
200 |
[3] |
[-6] |
|
250 |
[3] |
[-3] |
|
5000 |
[3] |
[-3] |
|
12500 |
[3] |
[-6] |
|
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 17: Headset receiving sensitivity/frequency masks
Compliance shall be checked by the relevant test described in TS 26.132.