Headphones provide binaural sound to a user wearing the headphones. The headphones store HRTFs of the user and include head tracking and a digital signal processor (DSP). The DSP processes sound into binaural sound that externally localizes to a sound localization point (SLP) at least one meter away from a head of the user. The headphones receive head gestures from the user.

Methods and apparatus include headphones that measure an interaural time difference (ITD) and sound impulse responses to determine user-specific head-related transfer functions (HRTFs) for a listener. The headphones include head tracking, and sound is adjusted so that a location of a source of the sound continues to originate from a sound localization point (SLP) in empty space that is at least one meter away from the head of the listener while the head orientations of the listener change with respect to the SLP.

A smartphone provides a voice of a person during a telephone call to a user of the smartphone in binaural sound. The smartphone stores HRTFs of the user, and a digital signal processor (DSP) processes the voice of the person with the HRTFs so the voice of the person externally localizes in the binaural sound at a sound localization point (SLP) that is in empty space one meter away from a head of the user.

Headphones provide a voice of a person as binaural sound during a telephone call with a user wearing the headphones. The headphones store HRTFs of the user, and a digital signal processor (DSP) processes the voice of the person with the HRTFs so the voice of the person externally localizes as binaural sound at a sound localization point (SLP) that is in empty space at least one meter away from a head of the user. The headphones track head movements of the user and select the HRTFs based on the head movements during the telephone call.

Disclosed is a voice messaging and calling system for inmates and their friends and family (collectively referred to as outsiders). It extends existing inmate telephone systems (ITS) without requiring any additional installation within correctional facilities or modifications to the existing ITS. An existing ITS provides functional restrictions, security restrictions and privacy limitations. The described system enhances the existing ITS to reduce the functional restrictions by adding the ability to leave voicemail messages when outsiders are unavailable and return calls to, or leave messages for, multiple outsiders in a single call. An additional enhancement allows outsiders to leave messages for the inmate at any time, which the inmate can listen to later. The security restrictions and privacy limitations are unaffected and left in place. The described system also reduces costs for inmates by allowing them to leave messages for and return calls to, multiple outsiders in a single call.

Voicemail spam detection is performed based on content of voicemail messages. The content of an incoming voicemail message is compared to a spam template that includes a representation of a spam voicemail. Spam templates may be generated based on spam indications provided by users for voicemail messages they have received. User indications for sufficiently similar voicemail messages may be aggregated by maintaining a vote count for a spam template that reflects how many times a user has indicated a matching voicemail message is spam. A spam template may also include an occurrence count that reflects how many times voicemail messages matching a spam template have been detected in a telephony system. An incoming voicemail message may be compared to spam templates and, responsive to a match of content and/or a corresponding vote count or occurrence count meeting a condition, the voicemail message may be identified as spam.

Disclosed is a method for providing information with a voice message to a subscriber A in response to a receipt of call connection attempt in a terminal device of a subscriber B, the method includes: detecting the call connection attempt from the subscriber A in the terminal device of the subscriber B; generating a message including data carrying a dedicated voice message to the subscriber A; outputting the generated message to the subscriber A. Also disclosed is relates to a system implementing the method and a computer program product.

Systems and methods provide a resident of a controlled-environment facility with voice messaging. The facility provides the resident with voice communication services. In response to a request by a resident for a voice communication with a non-resident, a call request to the non-resident may be initiated. In certain scenarios, the non-resident is unable to accept the call request. If a voice message is authorized, the resident is allowed to record a voice message for the non-resident. Certain restrictions may limit the resident to selecting from automated voice messages. A notification of the recorded voice message is dispatched to the non-resident. The notification identifies a unique link that directs the non-resident to a voice message retrieval system that allows the resident to retrieve and listen to the voice message recorded by the resident. The voice message recording remains under the control of the controlled-environment facility based on applicable security policies and procedures.

A method and system for providing a second line service (SLS) feature to a subscriber using a telecommunications device (TD) which includes receiving at a switch on the network of the subscriber's primary service provider a communication made up of a trigger and a directory number. When the communication is received at the primary service provider's switch, the switch parses the communication and detects the trigger. Once the switch has received the communication, the switch additionally transmits a query message to a SLS platform that manages the SLS feature. As a result of the switch's query message transmission, the switch receives a reply to the query message from the SLS platform. Based at least in part on the reply to the query message, the switch can route the communication such that the switch connects one or multiple voice channel circuit between the subscriber's TD and the terminating TD.

Systems and methods for providing an audio communication system include receiving from a first user, by a microphone of a first voice-controlled device of a plurality of voice-controlled devices in an audio communication system, a first audio message and an audio command to provide the audio message to a second user. An identity of the second user associated with a user profile based on the audio command is determined. The first audio message is provided to a second voice-controlled device of the plurality of voice-controlled devices to output the audio message at a speaker of the voice-controlled device to the second user that is proximity to the second voice-controlled device.