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Content for TR 26.801 Word version: 16.0.0

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4.1 Challenges on conducting objective tests according to 3GPP existing specifications for UEs featuring non-traditional earpieces 4.2 Reports on user studies with UEs featuring Non-traditional earpieces and suitability of existing test equipment 4.3 Acoustic measurements according to 3GPP TS 26.131 and TS 26.132 and additional test cases to complement TS 26.131 and TS 26.132 4.4 Acoustic measurements according to 3GPP TS 26.131 and TS 26.132 with various mounting conditions and test equipment

4 Report on studies with UEs featuring non-traditional earpieces p. 8

4.1 Challenges on conducting objective tests according to 3GPP existing specifications for UEs featuring non-traditional earpieces p. 8

4.1.1 Handset positioning on head and torso simulator p. 8

4.1.1.1 Background p. 8

4.1.1.2 Definition - within the FS_HaNTE study - of handset position for UEs featuring non-traditional earpieces p. 8

4.1.1.3 Template structure - within the FS_HaNTE study - of handset position for UEs featuring non-traditional earpieces p. 9

4.2 Reports on user studies with UEs featuring Non-traditional earpieces and suitability of existing test equipment p. 10

4.2.1 On the suitability of HATS for HaNTE measurements p. 10

4.2.1.1 Introduction p. 10

4.2.1.2 Description of experimental apparatus p. 10

4.2.1.2.1 Traditional and Non-Traditional Earpiece prototypes p. 10

4.2.1.2.2 Playback System p. 11

4.2.1.3 Description of experimental procedure p. 11

4.2.1.3.1 Wideband objective measurements on HATS p. 11

4.2.1.3.2 Band-passed objective measurements on HATS p. 13

4.2.1.3.3 Subjective loudness matching p. 13

4.2.1.4 Loudness Matching Results p. 14

4.2.1.5 Discussion p. 15

4.2.2 On the impact of handset mounting on HaNTE measurements p. 16

4.2.2.1 Introduction p. 16

4.2.2.2 Devices p. 16

4.2.2.2.1 Traditional and Non-Traditional Earpiece prototypes p. 16

4.2.2.2.2 Commercial devices p. 16

4.2.2.3 Measurement system p. 16

4.2.2.3.1 Device mounting p. 16

4.2.2.3.2 Playback system p. 17

4.2.2.3.3 Recording system p. 17

4.2.2.4 Measurement results p. 17

4.2.2.5 Discussion p. 18

4.3 Acoustic measurements according to 3GPP TS 26.131 and TS 26.132 and additional test cases to complement TS 26.131 and TS 26.132 p. 18

4.3.1 Test setup p. 18

4.3.2 Test results in receiving p. 19

4.3.2.1 WB RLR p. 19

4.3.2.2 WB RFR p. 20

4.3.3 Additional results on user studies and objective measurements p. 21

4.3.3.1 General p. 21

4.3.3.2 Additional test cases to complement TS 26.131 and TS 26.132 p. 21

4.3.3.2.1 Out-of-band energy level measurement from SWB RFR measurement p. 21

4.3.3.2.2 P.863 measurement p. 24

4.3.3.2.3 WB RFR at maximum volume control p. 24

4.3.4 Discussion p. 25

4.4 Acoustic measurements according to 3GPP TS 26.131 and TS 26.132 with various mounting conditions and test equipment p. 26

4.4.1 Introduction p. 26

4.4.2 Test Setup p. 26

4.4.3 Measurement Results p. 27

4.4.3.1 Device 1 on HATS 1 Measurements p. 27

4.4.3.1.1 Receiver Loudness Rating Results p. 27

4.4.3.1.2 Receiver Sensitivity/Frequency Response Results p. 28

4.4.3.2 Device 1 on HATS 2 Measurements p. 30

4.4.3.3 Device 2 on HATS 1 Measurements p. 30

4.4.3.3.1 Receiver Loudness Rating Results p. 30

4.4.3.3.2 Receiver Sensitivity/Frequency Response Results p. 31

4.4.3.4 Device 2 on HATS 2 Measurements p. 32

4.4.4 Discussion p. 32

5 Conclusion p. 33

A Tables for the study on suitability of HATS for HaNTE measurements p. 34

$ Change history p. 37