Content for TS 26.131 Word version: 18.0.0
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6.4.3 Desktop hands-free UE sending p. 40
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) |
|---|---|---|
| 100 | 0 | |
| 200 | 5 | -5 |
| 5 000 | 5 | -5 |
| 6 300 | 5 | -10 |
| 8 000 | 5 | |
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NOTE:
All sensitivity values are expressed in dB on an arbitrary scale.
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Compliance shall be checked by the relevant test described in TS 26.132.
6.4.4 Desktop hands-free UE receiving p. 41
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) |
|---|---|---|
| 125 | 8 | |
| 200 | 8 | -12 |
| 250 | 8 | -9 |
| 315 | 7 | -6 |
| 400 | 6 | -6 |
| 5 000 | 6 | -6 |
| 6 300 Hz | 6 | -9 |
| 8 000 Hz | 6 | -∞ |
|
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.
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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) |
|---|---|---|
| 100 | 0 | |
| 200 | 0 | -18 |
| 250 | 0 | -15 |
| 315 | 0 | -12 |
| 6 300 | 0 | -12 |
| 8 000 | 0 |
Figure 12a: Performance objective for desktop and vehicle-mounted hands-free receiving sensitivity/frequency response
(⇒ copy of original 3GPP image)
(⇒ copy of original 3GPP image)
Compliance shall be checked by the relevant test described in TS 26.132.
