7.4.3 Desktop and vehicle-mounted hands-free UE sending

26.1313GPPRelease 17RequirementsTerminal 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 and vehicle-mounted 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 tableĀ 24.

Table 24: Handset and headset 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 and vehicle-mounted hands-free sending sensitivity/frequency masks

Compliance shall be checked by the relevant test described in TS 26.132.