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Content for  TS 26.131  Word version:  18.1.0

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6.4.3  Desktop hands-free UE sendingp. 43

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 11 on a logarithmic (frequency) - linear (dB sensitivity) scale.
Frequency (Hz) Upper limit (dB) Lower limit (dB)
1000
2005-5
5 0005-5
6 3005-10
8 0005
NOTE:
All sensitivity values are expressed in dB on an arbitrary scale.
Copy of original 3GPP image for 3GPP TS 26.131, Fig. 11: Desktop hands-free sending sensitivity/frequency mask
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Compliance shall be checked by the relevant test described in TS 26.132.

6.4.4  Desktop hands-free UE receivingp. 44

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 12 on a logarithmic (frequency) - linear (dB sensitivity) scale.
Frequency (Hz) Upper limit (dB) Lower limit (dB)
1258
2008-12
2508-9
3157-6
4006-6
5 000 6-6
6 300 Hz6-9
8 000 Hz6-∞
NOTE:
The limits for intermediate frequencies lie on a straight line drawn between the given values on a linear (dB) - logarithmic (Hz) scale.
All sensitivity values are expressed in dB on an arbitrary scale.
Copy of original 3GPP image for 3GPP TS 26.131, Fig. 12: Desktop hands-free receiving sensitivity/frequency mask
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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 12a on a logarithmic (frequency) - linear (dB sensitivity) scale.
Frequency (Hz) Upper limit (dB) Lower limit (dB)
1000
2000-18
2500-15
3150-12
6 3000-12
8 0000
Copy of original 3GPP image for 3GPP TS 26.131, Fig. 12a: Performance objective for desktop and vehicle-mounted hands-free receiving sensitivity/frequency response
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Compliance shall be checked by the relevant test described in TS 26.132.

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