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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Explain sound and acoustics 
SAQA US ID UNIT STANDARD TITLE
265004  Explain sound and acoustics 
ORIGINATOR
SGB Manufacturing and Assembly Processes 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03  10 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
The person credited with this unit standard is able to understand the production and transmission of sound in electronic devices. Learners will understand the anatomy of the ear and know how the reception of sound in terms of wave theory. Learners will also be able to explain the production of sound in electronic devices and compare digital transmission with analogue transmission.

The qualifying learner is capable of:
  • Explaining the anatomy and function of the human ear.
  • Explaining the concept of sound.
  • Explaining the transmission of sound in electronic devices.
  • Demonstrating knowledge of the operation of electronic sound devices. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Communication at NQF Level 2 or equivalent.
  • Mathematical Literacy at NQF Level 2 or equivalent. 

  • UNIT STANDARD RANGE 
    Sound and acoustic electronic devices may include but is not limited to hearing aids, cell phones, telephones, personal computers, televisions, IPods, MP3 players, alarms, navigation systems, intercom systems, equalisers, transmitters/receivers and radios. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain the anatomy and function of the human ear. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The parts of the ear are identified in terms of the anatomy of the human ear. 

    ASSESSMENT CRITERION 2 
    The reception of sound by the human ear is explained in relation to wave theory. 

    ASSESSMENT CRITERION 3 
    The perception of sound is explained in relation to the human brain. 

    SPECIFIC OUTCOME 2 
    Explain the concept of sound. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    A basic definition of sound is provided in relation to vibration. 

    ASSESSMENT CRITERION 2 
    Four main parts of a sound wave is explained in terms of wave theory. 
    ASSESSMENT CRITERION RANGE 
    Components may include but is not limited to microphone, receiver, tone signalling, ringing, anti-side tone control and speaker.
     

    ASSESSMENT CRITERION 3 
    The travel of sound is explained with reference to the different mediums. 

    ASSESSMENT CRITERION 4 
    Constructive and destructive interference is explained in terms of wave theory. 

    ASSESSMENT CRITERION 5 
    Beat production is explained in terms of wave interference. 

    ASSESSMENT CRITERION 6 
    Diffraction of sound waves is explained in terms of wave theory. 

    SPECIFIC OUTCOME 3 
    Explain the transmission of sound in electronic devices. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The source of sound production is explained in relation to electronic devices. 

    ASSESSMENT CRITERION 2 
    The function of the different components of electronic devices is explained in terms of sound production. 

    ASSESSMENT CRITERION 3 
    Frequency range of the specific electronic device is identified according to its type and application. 

    SPECIFIC OUTCOME 4 
    Demonstrate knowledge of the operation of electronic sound devices. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Underlying concepts of telecommunications are described in simple non-mathematical terms and with reference to their relevance to telecommunications. 
    ASSESSMENT CRITERION RANGE 
    Concepts may include but are not limited to sound, frequency, wavelength, bandwidth, modulation, attenuation, bits.
     

    ASSESSMENT CRITERION 2 
    The use of a simple sound device is explained with the aid of a diagram and with reference to components, signalling and transmission of sound. 

    ASSESSMENT CRITERION 3 
    The types of modulation and the principle of multiplexing are described as used in telecommunication systems. 

    ASSESSMENT CRITERION 4 
    The concepts of impedance, termination, reflection, crosstalk, noise and signal level, are described in non-mathematical terms and in relation to transmission of sound. 

    ASSESSMENT CRITERION 5 
    Digital transmission of data is compared to analogue transmission. 
    ASSESSMENT CRITERION RANGE 
    Signal waveforms may include but are not limited to bandwidth errors, tolerance to noise, line coding.
     


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • An individual wishing to be assessed (including through RPL) against this unit standard may apply to an assessment agency, assessor or provider institution accredited by the relevant ETQA or an ETQA that has a Memorandum of Understanding in place with the relevant ETQA.
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA or an ETQA that has a Memorandum of Understanding in place with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard or assessing this unit standard must be accredited as a provider with the relevant ETQA or an ETQA that has a Memorandum of Understanding in place with the relevant ETQA.
  • Moderation of assessment will be conducted by the relevant ETQA at its discretion. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
  • Wave theory and acoustics.
  • Sound production and transmission.
  • Policies, procedures and relevant legislative and/or regulatory requirements affecting sound transmission. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems associated with the transmission of sound in electronic sound devices. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage oneself and one's activities responsibly and effectively to understand the acoustics of a particular electronic sound device. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using appropriate modes of oral and/or written persuasion in assessing the acoustics of an electronic sound device. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology to assist with the understanding of sound production and transmission. 

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising how sound production and transmission impact on society as a whole. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  67569   National Certificate: Electronics Manufacturing and Assembly  Level 2  NQF Level 02  Passed the End Date -
    Status was "Reregistered" 
    2015-06-30  MERSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.