Basic moduleBasic module includes eight different practice groups, covering pure tones, environmental sounds, voice genders, vowel recognition, consonant recongition, everyday words, everyday sentences, and music appreciation. The training task in the basic module is of relatively easy and moderate difficulty. After the user excel the training tasks in the basic module, the user is recommended to conduct the training targeted at specific tasks.Adaptive Speech In Noise Training ModuleThis is an advanced module targeted at improving speech perception in the presence of background noise. This module is appropriate for experienced users to improve speech understanding in background noise. Two advanced training protocols are used: phoneme-in-noise protocol and keyword-in-sentence. The background noise includes six-talker speech babble, speech-shaped steady noise, and white noise. All procedures use closed-set with 4-alternative choices. Telephone Speech Training ModuleThis module is similar to the basic module except that the frequency range of all acoustic sounds is limited to telephone bandwidth (300-3200 Hz) by using real-time filtering. The training groups in this module are same as those in basic module. The training task in the telephone speech training module is of relatively easy and moderate difficulty. Moledic Contour Identification Training ModuleThis advanced module provides MIDI-based Melodic Contour Identification Training for CI patients to aid them in improving their recognization of melodies, thereby improving their music appreciation. For the MCI task, test stimuli were melodic contours composed of 5 notes of equal duration whose frequencies corresponded to musical intervals. The interval between successive notes in each contour was varied between 1 and 5 semitones; the “root note” of the contours was also varied. Nine distinct musical patterns were generated for each interval and root note condition. Openset Training ModuleThis advanced module provides several advanced training protocols for different listening situations. It differs from closed set phoneme recognition as there are no explicit choices for each trial. The chance level is close to zero. There are six training groups in this module which target at different listening conditions. This training module covers words, sentences, digits, melody, instrument, concatenated sentences, recognition threshold. Comprehensive Music Training Module (Exclusive For Angel Sound)This advanced module provides comprehensive training on musical related tasks. There are seven training groups in this module which target at different levels. This training module covers music note iscrimination, melodic contour identification, melodic sequence identification, music chord identification, melodic contour segregation, music instrument identification, and familiar melody identification. Auditory Resolution Training Module (Exclusive For Angel Sound)The Auditory Resolution Training Module provides you with the opportunity to listen to and distinguish sounds differed in one specific domain, such as spectral, temporal, and amplitude etc. This training group is aimed at improving the ability to discriminate the subtle acoustic difference among these sound, thus improving speech understanding. This training module covers frequency discrimination, modulation detection, modulation frequency disctimination, temporal gap detection, amplitude discrimination, forward masking, pure tone detection, and music rhythm training.Functional Hearing Test Module (Exclusive for Angel Sound)It is important to use appropriate functional hearing test to assess whether hearing-impaired people benefit from their cochlear implant or hearing aid. Most well-known standardized function hearing tests are openset sentence or word recognition. However, openset recognition tasks are difficult for hearing-impaired people to administer at home alone since these tasks generally require third-party to perform. One of the powerful features in the Angel SoundTM is the seamless integration of speech training and testing function. The functional hearing test module in the Angel SoundTM is developed to incoporate most commonly used speech and music recognition tasks into a single module so the user can quickly find the appropriate tasks for assessing their functional hearing status. Scene-based Learning by Listening (Exclusive for Angel Sound)It is important to use age-appropriate listening materials for hearing-impaired children who have cochlear implant device or hearing aid device to faciliate their language development. The learning by listening module in the Angel Sound is developed to incoporate scene-based training protocols for children with cochlear implant device or hearing aid device to discriminate different sounds as well as learn new words.