7.4.6 Hand-held hands-free UE receiving

26.1313GPPRelease 17RequirementsTerminal 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 29 on a logarithmic (frequency) – linear (dB sensitivity) scale.

Table 29: Hand-held hands-free receiving sensitivity/frequency mask

Frequency (Hz)

Upper limit (dB)

Lower limit (dB)

TBD

TBD

TBD

NOTE: All sensitivity values are expressed in dB on an arbitrary scale.

TBD

It is recommended as a performance requirement that the receiving sensitivity frequency response be within the mask which can be drawn with straight lines between the breaking points in table 30 on a logarithmic (frequency) – linear (dB sensitivity) scale.

Table 30: Performance objective for hand-held hands-free receiving sensitivity/frequency mask

Frequency (Hz)

Upper limit (dB)

Lower limit (dB)

TBD

TBD

TBD

NOTE: All sensitivity values are expressed in dB on an arbitrary scale.

TBD

Figure 21: Hand-held hands-free receiving sensitivity/frequency masks

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

7.4.7 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 30a1.

The masks are drawn with straight lines between the breaking points in the tables on a logarithmic (frequency) – linear (dB sensitivity) scale.

Table 30a1: Handset and headset sending sensitivity/frequency requirement mask

Frequency (Hz)

Upper limit

Lower limit

100

1

[-8]

200

1

-5

1000

1

-5

3000

6

-3

5000

8

-3

12500

8

-3

16000

8

NOTE 1: All sensitivity values are expressed in dB on an arbitrary scale.

NOTE 2: The limit in bracket in the table is enforced but is under evaluation.

Figure 16a: Electrical interface sending 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 30a1, 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 14a1.

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

7.4.8 Electrical interface UE receiving

The sensitivity/frequency characteristics shall be as follows:

The receiving sensitivity frequency response measured at the electrical reference point shall be within a mask, which can be drawn with straight lines between the breaking points in table 30a2 on a logarithmic (frequency) – linear (dB sensitivity) scale.