Patents Assigned to Creative Technology, Ltd
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Patent number: 12184239Abstract: A computer sound card includes a power supply noise isolation circuit for reducing ground plane noise generated during application of heavy electrical loads to the power supply, such as loads presented by computer GPUs. The power supply isolation circuit isolates the output ground from the ground presented from the power supply to the isolation circuit input. The isolation circuit in one embodiment includes switching circuitry and a transformer to reduce the power supply ripple noise that might otherwise be introduced by the power supply into an amplifier such as a microphone preamp. In some embodiments a differential amplifier stage is added to the output of the microphone preamp stage to further reduce noise, such as common mode noise.Type: GrantFiled: July 7, 2020Date of Patent: December 31, 2024Assignee: Creative Technology LtdInventors: Yam Fei Lian, Siew Ling Loke
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Publication number: 20240305949Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.Type: ApplicationFiled: May 16, 2024Publication date: September 12, 2024Applicant: Creative Technology LtdInventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
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Patent number: 12022277Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.Type: GrantFiled: August 2, 2023Date of Patent: June 25, 2024Assignee: CREATIVE TECHNOLOGY LTDInventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
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Patent number: 11947868Abstract: A method for muting and unmuting a microphone is provided. The method includes providing a processor, receiving an input microphone signal, measuring the input microphone signal for a loudness level at a sampling rate, calculating a mute threshold level, checking if the loudness level is higher than or equal to the mute threshold level, and resetting a mute delay timer upon determining that the loudness level is higher than or equal to the mute threshold level and obtaining the input microphone signal, or checking if the mute delay timer is running upon determining that the loudness level is not higher than or equal to the mute threshold level and attenuating the input microphone signal if the mute delay timer is not running or obtaining the input microphone signal if the mute delay timer is still running, and writing the input microphone signal or attenuated input microphone signal to an output buffer.Type: GrantFiled: December 28, 2021Date of Patent: April 2, 2024Assignee: CREATIVE TECHNOLOGY LTD.Inventors: Kee Seng Tan, Luen Kai Chan, Ariel Arellano De Castro
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Publication number: 20240105200Abstract: A method for selective noise suppression in an audio playback is provided. The method includes providing a processor, obtaining a microphone state and a playback device state with the processor from an operating system, determining the audio playback is communication audio based on the microphone state and the playback device state, and enabling applying noise suppression to the audio playback if the audio playback is communication audio, is not music and noise is present, or otherwise disabling applying noise suppression to the audio playback.Type: ApplicationFiled: August 25, 2023Publication date: March 28, 2024Applicant: Creative Technology LtdInventors: Kee Seng TAN, Luen Kai CHAN, Ariel Arellano DE CASTRO
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Patent number: 11924506Abstract: It is common that in an audio system, there are multiple data rates that need to be synchronized. For example, a sending device has its own crystal or clock, and a receiving device has another. Typical solutions introduce a lot of latency. According to various embodiments of the invention, a data management mechanism and technique are presented. The data management mechanism and technique pertains to managing media data such as those in an audio system, for example, managing the consumption of digital audio data in USB audio. The data management mechanism may include a dynamic buffer, which can be automatically controlled and adjusted to address issues (e.g., latency) in data consumption.Type: GrantFiled: February 14, 2020Date of Patent: March 5, 2024Assignee: CREATIVE TECHNOLOGY LTD.Inventor: Boon Liang Stanley Lim
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Patent number: 11849303Abstract: An audio rendering system includes a processor that combines audio input signals with personalized spatial audio transfer functions preferably including room responses. The personalized spatial audio transfer functions are selected from a database having a plurality of candidate transfer function datasets derived from in-ear microphone measurements for a plurality of individuals. Alternatively, the personalized transfer function datasets are derived from actual in-ear measurements of the listener. Foreground and background positions are designated and matched with transfer function pairs from the selected dataset for the foreground and background direction and distance. Two channels of input audio such as voice and music are processed. When a voice communication such as a phone call is accepted the music being rendered is moved from a foreground to a background channel corresponding to a background spatial audio position using the personalized transfer functions.Type: GrantFiled: August 15, 2022Date of Patent: December 19, 2023Assignee: CREATIVE TECHNOLOGY LTD.Inventors: Wong Hoo Sim, Teck Chee Lee
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Patent number: 11844441Abstract: A chair system including a main unit and an untethered chair is provided. The main unit includes a wireless transmitter, a subwoofer, an audio stream receiver and a processor. The untethered chair includes a plurality of speakers, a power source and a wireless receiver for receiving a processed audio stream from the main unit.Type: GrantFiled: March 29, 2023Date of Patent: December 19, 2023Assignee: CREATIVE TECHNOLOGY LTDInventors: Wong Hoo Sim, Kee Seng Tan, Yam Fei Lian
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Publication number: 20230386174Abstract: There is provided a method for generating a personalized Head Related Transfer Function (HRTF). The method can include capturing an image of an ear using a portable device, auto-scaling the captured image to determine physical geometries of the ear and obtaining a personalized HRTF based on the determined physical geometries of the ear.Type: ApplicationFiled: August 9, 2023Publication date: November 30, 2023Applicant: Creative Technology LtdInventors: Teck Chee Lee, Christopher Tjiongan, Desmond HII, Geith Mark Benjamin Leslie
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Publication number: 20230379650Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.Type: ApplicationFiled: August 2, 2023Publication date: November 23, 2023Applicant: Creative Technology LtdInventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
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Patent number: 11804027Abstract: There is provided a method for generating a personalized Head Related Transfer Function (HRTF). The method can include capturing an image of an ear using a portable device, auto-scaling the captured image to determine physical geometries of the ear and obtaining a personalized HRTF based on the determined physical geometries of the ear.Type: GrantFiled: October 10, 2022Date of Patent: October 31, 2023Assignee: CREATIVE TECHNOLOGY LTD.Inventors: Teck Chee Lee, Christopher Tjiongan, Desmond Hii, Geith Mark Benjamin Leslie
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Publication number: 20230328474Abstract: The present disclosure relates to a system and a processing method in association with the system for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. The customized audio response characteristic(s) can be unique to the person.Type: ApplicationFiled: June 13, 2023Publication date: October 12, 2023Applicant: Creative Technology LtdInventors: Teck Chee Lee, Christopher Hummersone, Toh Onn Desmond Hii
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Patent number: 11785412Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.Type: GrantFiled: September 12, 2022Date of Patent: October 10, 2023Assignee: CREATIVE TECHNOLOGY LTD.Inventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
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Publication number: 20230292926Abstract: A chair system including a main unit and an untethered chair is provided. The main unit includes a wireless transmitter, a subwoofer, an audio stream receiver and a processor. The untethered chair includes a plurality of speakers, a power source and a wireless receiver for receiving a processed audio stream from the main unit.Type: ApplicationFiled: March 29, 2023Publication date: September 21, 2023Applicant: CREATIVE TECHNOLOGY LTDInventors: Wong Hoo Sim, Kee Seng Tan, Yam Fei Lian
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Patent number: 11716587Abstract: The present disclosure relates to a system and a processing method in association with the system for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. The customized audio response characteristic(s) can be unique to the person.Type: GrantFiled: June 28, 2021Date of Patent: August 1, 2023Assignee: CREATIVE TECHNOLOGY LTDInventors: Teck Chee Lee, Christopher Hummersone, Toh Onn Desmond Hii
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Publication number: 20230230280Abstract: An imaging platform for capturing multiple views is provided. The imaging platform includes a desktop base, an upright element having a first end and a second end, the first end coupled to the desktop base, a first camera and a second camera positioned on at least one protruding element coupled to the upright element, the second camera facing the desktop base, a control panel for selecting a selection of a plurality of different outputs, and a processor. The processor obtains at least one camera output from the first camera and/or the second camera based on the selection of the plurality of outputs on the control panel, and provides a processed output based on the selection of the plurality of outputs on the control panel.Type: ApplicationFiled: December 30, 2022Publication date: July 20, 2023Applicant: Creative Technology LtdInventors: Wong Hoo SIM, Aik Hee GOH, Kee Seng TAN, Wei-Peng Renny LIM, Chin Fang LIM
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Patent number: 11641945Abstract: A chair system including a main unit and an untethered chair is provided. The main unit includes a wireless transmitter, a subwoofer, an audio stream receiver and a processor. The untethered chair includes a plurality of speakers, a power source and a wireless receiver for receiving a processed audio stream from the main unit.Type: GrantFiled: December 28, 2020Date of Patent: May 9, 2023Assignee: CREATIVE TECHNOLOGY LTDInventors: Wong Hoo Sim, Kee Seng Tan, Yam Fei Lian
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Publication number: 20230072391Abstract: An audio rendering system includes a processor that combines audio input signals with personalized spatial audio transfer functions having room responses. The personalized spatial audio transfer functions are selected from a database having a plurality of candidate transfer functions derived from in-ear microphone measurements for a plurality of individuals. Alternatively, the personalized transfer functions are derived from actual in-ear measurements of the listener. A room modification module allows the user to modify the personalized spatial audio transfer functions to substitute a different room or to modify the characteristics of the selected room without requiring additional in ear measurements. The module segments the selected transfer function into regions including one or more of direct; head and torso influenced; early reflection, and late reverberation regions. Extraction and modification operations are performed on one or more of the regions to alter the perceived sound.Type: ApplicationFiled: November 14, 2022Publication date: March 9, 2023Applicant: Creative Technology LtdInventors: Teck Chee LEE, Christopher HUMMERSONE, Mark Anthony DAVIES, Toh Onn Desmond HII
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Patent number: 11601775Abstract: A method is provided for generating a personalized Head Related Transfer Function (HRTF). The method can include capturing an image of an ear using a portable device, auto-scaling the captured image to determine physical geometries of the ear and obtaining a personalized HRTF based on the determined physical geometries of the ear. In addition, a system and a method in association with the system are also provided for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. Finally, methods and systems are provided for rendering audio over headphones with head tracking enabled by, for example, exploiting efficiencies in creating databases and filters for use in filtering 3D audio sources for more realistic audio rendering and also allowing greater head movement to enhance the spatial audio perception.Type: GrantFiled: September 29, 2020Date of Patent: March 7, 2023Assignee: CREATIVE TECHNOLOGY LTDInventors: Teck Chee Lee, Desmond Hii
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Patent number: D1006796Type: GrantFiled: June 8, 2022Date of Patent: December 5, 2023Assignee: CREATIVE TECHNOLOGY LTD.Inventors: Jeng Khim Tan, Weihao Tan