TC-35064-000

TWS Reference Design with Consumer-Preferred Sound and ANC Reference Design KN2 Part number TC-35064-000 The Knowles Preferred Earphone Response Curve is the result of extensive consumer testing. This reference design demonstrates how meeting the curve using a BA tweeter delivers premium sound that users demand. Key Benefits Key Features  Fast time to market for TWS with consumerpreferred sound, ANC, and advanced features  Turnkey reference design, aesthetic customizations possible  Manufactured by a leading ODM  Knowles balanced armature + dynamic combined to achieve the Knowles Preferred Listening Curve  Top-quality Knowles balanced armature tweeters and MEMS microphones  Hybrid ANC with transparency mode  8 hours battery life streaming Hybrid Dynamic woofer BA tweeter  Dual-mic outgoing noise reduction  Temperature and in-ear sensors  Qualcomm QCC5144 supporting SBC, AAC, aptX. (aptX Adaptive with license) Configuration of a hybrid earphone In a hybrid configuration, each driver plays to its strengths. The dynamic woofer provides warm bass with sufficient output to support quality ANC. The balanced armature tweeter delivers clear, precise extended treble that adds life and vibrancy to the music. Hybrids are the fastest way to achieve premium sound with ANC compatibility and plenty of headroom for hearing personalization. KN2 | TWS Reference Design with Consumer-Preferred Sound and ANC 1 Performance Measurements 0dBFS-Response vs. Frequency KN2 - Sample data, BT (00dBFS), TWS Earpiece into 711 (RA401), 08/29/2022 130 Frequency response with ANC on and off. dB SPL 120 110 100 Knowles Curve ANC off 90 ANC on 80 10 100 Frequency (Hz) 1,000 10,000 1/3rd Octave ANC Noise Reduction Average KN2 - Sample data, TWS Earpiece into 711 (RA401), 08/29/2022 10 ANC performance, active and passive. Average of four directions and two ears. dB SPL 0 -10 -20 Total Passive -30 Active -40 10 100 Frequency (Hz) 1,000 10,000 Occluded Sound Reduction vs. Frequency KN2 - Sample data, TWS Earpiece into 711 (RA401), 08/29/2022 20 Vent Occlusion reduction provided by combination of front vent and ANC. dB re Sealed 10 ANC Vent + ANC 0 -10 -20 -30 10 100 Frequency (Hz) KN2 | TWS Reference Design with Consumer-Preferred Sound and ANC 1,000 10,000 2