Loud speaker directivity Enroll no. 130470111041 Name: Valambhia celeste.

Slides:

Advertisements

Similar presentations

C. M. Johnson, P. H. Riley and C. R. Saha Thermo-acoustic engine converts thermal energy into sound energy by transferring heat between the working media.

Advertisements

Investigating Electromagnetic and Acoustic Properties of Loudspeakers Using Phase Sensitive Equipment Katie Butler DePaul University Advisor: Steve Errede.

Eric Redler Nathan Kubiak.  Speakers with accurate sound for a specific use  More reliable than home stereo speakers.

Basic Audio Production

Digital Audio Mics and connections.

Indian Institute of Technology Hyderabad SPEAKER & AMPLIFIER Ayush Saini- CH12B1005 Harmanpreet Singh-CS12B1017 Udhav Sethi-ES12B1022.

Speaker Design A. Ryan Parker. Diaphragm Usually manufactured with a cone or dome shaped profile to accurately reproduce the voice coil signal waveform.

Part (2) Signal Generators & Sensors Lecture 5 د. باسم ممدوح الحلوانى.

1 Live Sound Reinforcement Microphones. 2 Live Sound Reinforcement A microphone is a transducer that changes sound waves into electrical signals and there.

SMAW Equipment (Shielded Metal Arc Welding- commonly called “stick welding”, or “arc welding”)

Chapter 11 – Magnetic Circuits Lecture 6A – (Tutorial) by Moeen Ghiyas 07/05/

Fundamentals of Audio Production, Chapter 10 1 Fundamentals of Audio Production Chapter Ten: Loudspeakers.

Speakers Read Yamaha manual pgs Read Yamaha manual pgs The cone, usually made of paper, plastic or metal, is attached on the wide end.

The Electromagnetic Properties of Electric Guitar Pickups Dan Carson, Prof. Steve Errede University of Illinois at Urbana-Champaign Image courtesy of

Input Transducers (Microphones).

 Process of recording audio on set  Starts in pre-production  Specific crew positions  Goal is to capture the cleanest possible recording of set dialogue.

Intro to Electricity What is electricity? How is it created? How is it transmitted?

1 Output Transducers (Loudspeakers). 2 Loudspeakers  Transducers that convert electrical signals into sound waves  The current flow in the coil causes.

Power Amplifiers and Loudspeakers Power amp ratings Loudspeaker types and uses.

This is a type of meter to display the level of an input audio signal. It makes use of the National Semiconductor LM3916 bar graph/LED driver chip. This.

Electronic Metronome Using a 555 Timer.

Energy, Waves, and Sound James Shaffer Kansas State University.

Live Sound Reinforcement

Chapter 7 Sound Recording and Reproduction

Power Amplifiers and Loudspeakers Power amp ratings Loudspeaker types and uses.

Electrical Fundamentals

Electricity, Electronics And Ham Radio “Kopertroniks” By Nick Guydosh 4/12/07.

Electromagnets!Electromagnets! By Jack and Bella.

 Process of recording audio on set  Starts in pre-production  Specific crew positions  Goal is to capture the cleanest possible recording of set dialogue.

Chapter 9 Magnetism.

1 Magnetism.. 2 Magnetic Fields  Magnetic fields are historically described in terms of their effect on electric charges. A moving electric charge, such.

Operate a digital audio workstation (1.1) Condenser microphone Definition and instrument use: The use of this microphone is for singing and instrument.

EE1008- ELECTRICAL AND ELECTRONICS MEASUREMENTS AND INSTRUMENTATION

Dynamic Microphones. Step-By-Step  Let’s take a step by step look into how the microphone process’s sound.

Hosted by Mrs. Jansen Vocab 1Vocab 2 True or False Random

Testing loudspeakers in a production environment - the P630 test system K & K International Ib Rasmussen.

VID102 DAY 3.  Schedule Change  Viewing Examples  Audio Principles Class Schedule.

EE1008- ELECTRICAL AND ELECTRONICS MEASUREMENTS AND INSTRUMENTATION UNIT -1 Measurement of R, L, C 10/21/2015www.noteshit.com1.

Physics 106 Lesson #22 Magnetism: Speakers and Microphones Dr. Andrew Tomasch 2405 Randall Lab

Optical Communication From Sound to Light and Back.

Revision CUS30109 Certificate III in music. Microphones - Condenser w phantom power - Dynamic - What each is used for - Polar patterns/ frequency response.

Electronic Components Circuit/Schematic Symbols. RESISTOR Resistors restrict the flow of electric current, for example a resistor is placed in series.

Microphone research project: The Dynamic Microphone Alice Gold.

Garreth Lee, Seow Jing Ye, Haonan Yu. An electroacoustic transducer that produces sound in response to an electrical audio signal input Common loudspeaker.

Scott Hanlon Next. Microphones Loudspeakers Amplifiers Mixing Consoles Signal Processors Software References Contents.

Speaker: A device that converts electrical signals into sound

FI5 Notes. FI5- What is an electromagnet? Electromagnets are magnets that have their magnetic field produced by electric current. The magnetic field disappears.

Chapter 6 Lesson 3 Magnetism. Magnetism is the ability of an object to push or pull on another object that has the magnetic property. Magnets have two.

Microphones Design and Application Huber Ch. 4 (Eargle Ch. 3)

Electromagnet Principles

V-Cert Music Technology Microphone techniques in Music UNIT 9 NAME………………………………………………………….. YOU WILL: Be working independently to research and complete.

15.1 Properties of Sound. Chapter 15 Objectives  Explain how the pitch, loudness, and speed of sound are related to properties of waves.  Describe how.

Darshan Institute of Eng. & Tech. Subject:- Audio Video System Topic:- Types loudspeakers Prepared By:  Nikunj Ramavat ( )

Narnarayan Shastri Institute Of Technology SUBJECT:- AVS FACULTY:- Malhar Chauhan FIELD:- E.C SEM-5 TH TOPIC:- Types Of Microphones Prepared By, PATEL.

Kinjal Badhiwala Aarti Chauhan Disha Dholakiya Nikita Ojha.

PUBLIC ADDRESS SYSTEM As apart of Active Learning Assignment (ALE) in the subject of Audio & Video System [AVS] Code: Student Name :SAGAR BHUMI.

Input and Sensor Input: Any signal or information digital or analog that is processed in a system is known as input. Sensor: A sensor is an object whose.

Amplifiers a powerful beast. amplification amplification is the use of a small volatge/current to control a larger voltage/current. A change in the input.

A Tutorial on Acoustical Transducers: Microphones and Loudspeakers

Microphones are a type of transducer - a device which converts energy from one form to another. Microphones convert acoustical energy (sound waves) into.

Chapter 18 Transformers.

Sound Design and Technology (Sound Systems)

THERMOACOUSTIC REFRIGERATION

Introduction What is a transducer? A device which converts energy in one form to another. Transducer Active Passive Generates its own electrical voltage.

Speakers Microphones.

The Motor effect Learning Outcomes Most students should be able to:

How a Speaker Works.

Name: _________________________

Electromagnetism.

A Tutorial on Acoustical Transducers: Microphones and Loudspeakers

Presentation transcript:

Loud speaker directivity Enroll no Name: Valambhia celeste

Why investigate loudspeakers? Most important link in the audio chain Last piece of equipment audio signal passes through Many variables in loudspeakers; permanent magnet, size and weight, material of cone, size and type of enclosure, etc. TheToneChamber.com

How speakers work Voice coil (electromagnet) is positioned in constant magnetic field from permanent magnet Current across voice coil constantly changes, changing the magnetic field polarity and strength causing the voice coil and diaphragm to move Cross-section of typical loudspeaker

Loudspeaker analogous circuit Using electrical components to model the mechanical components of the loudspeaker, further work must be done to accurately calculate these using data collected

Low distortion power amplifier No audio amplifiers readily available in lab Need to amplify signal from function generator to power loudspeaker Building amp using widely available LM3875 chip amp Constant voltage source, typical for powering speakers Component going into amplifier

Amplifier pictures

Data acquisition technique for measuring electromagnetic properties of loudspeaker Based on UIUC Physics 498POM PC-Based Pickup Impedance Measuring System

Complex pressure p and particle velocity u measurements Acoustic measurements will be taken at the same time as electromagnetic measurements

Impedance and Power Electrical Impedance (Ohms,  e ) Electrical Power (W) Radiation Impedance (Pa-s/m   ac ) Acoustic Intensity (W/m 2 )

Phase sensitive equipment SR830 Dual-Channel DSP lock-in amplifiers

The Speaker Italian Jensen C12N Ceramic magnet 12”, 8  50 watt rated power Designed to emulate American made Jensens from the 1960s

Apparatus Took measurements 3 ways: in free air, on baffle board, in speaker cabinet Microphones are on movable arms controlled by computer program Current and voltage cables attached underneath Foam sound absorbers used under speaker to prevent reflections Setup with speaker on baffle board

Speaker Cabinet Designed and built by Steve Errede, based on Marshall 1965B 4  10 straight speaker cabinet Sound absorptive material placed in cabinet behind speaker