The aim is to design a next generation real time karaoke device which would be a stereo type equalizer by efficient
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1 ISSN: X CODEN: IJPTFI Available Online through Research Article IMPLEMENTATION OF SIGNAL EQUALIZER FOR THE EFFICIENT KARAOKE USING LAB VIEW BASED ON MYDAQ S Mohammed Adil 1, M.Reji [2] Student, Department of Electronics and Communication, Saveetha School of Engineering [1] Assistant Professor, Department of Electronics and Communication, Saveetha School of Engineering [2] mohammmadadil@gmail.com Received on: Accepted on: Abstract The aim is to design a next generation real time karaoke device which would be a stereo type equalizer by efficient design of filters in Lab VIEW. We use lab VIEW because it simulates the response signal and reduces hardware complexity. The existing system involves the earlier day s karaoke which uses cassette tapes but now currently DVD s are used. It is a form of interactive entertainment or video game in which an amateur singer sings along with recorded music using a microphone and public address system. To overcome these existing problems in karaoke device Audio signals from the ipods is acquired by a Data acquisition device. After getting the signals they are disintegrated. Filtering of these frequencies are done by using various filters. The frequency bands of graphic equaliser are equally divided. Indexed Terms- Karaoke device, Labview, Microphone 1. Introduction The aim is to design a next generation real time karaoke device which would be a 5 band stereo type equalizer by efficient design of filters in Lab VIEW by using Signal processing toolkit Once the audio signals are equalized the karaoke machine is designed to remove the vocals. This essentially removes any signals which are identical between the left and the right audio channel, removing the lead vocalist by which we can just plug in a source of audio track and can be readily use as a karaoke by employing the this design. Existing System: The existing system involves the earlier day s karaoke machines used cassette tapes, but technological advances replaced this with CDs, VCDs, laser discs and, currently, DVDs.It is a form of interactive entertainment or video game in which an amateur singer sings along with recorded music (a music video) using a microphone and public IJPT Dec-2016 Vol. 8 Issue No Page 20502
2 address system. The music is typically a well-known popular song minus the lead vocal. Lyrics are usually displayed on a video screen. Limitations of Existing System It is very much needed to have already recorded background music of that particular song. It is not always possible to obtain music background for all required songs It is hard to maintain all possible songs background scores Proposed System: To overcome these existing problems in karaoke device Audio signals from the ipods or mp3 player from mobile are acquired through a Data acquisition device. After getting the signals they are filtered into different frequency band such as low bass, Upper bass, mid -range, Upper midrange and treble. Filtering of these frequencies are done by using Low pass, Band pass filter and High pass filters. The frequency bands of a graphic equalizer are finely divided up, and sliders are used to boost (by moving the slider up) or cut (by moving the slider down) each frequency range. 2. Hardware Descriptions My daq kit: The NI mydaq is a low-cost portable data acquisition (DAQ) device that uses NI Lab VIEW-based software instruments, allowing students to measure and analyse real-world signals. A mydaq (shown in Figure 1) is ideal for exploring electronics and taking sensor measurements. Combined with NI Lab VIEW on the PC, students can analyse and process acquired signals and control simple processes anytime, anywhere. Fig. 1 NI mydaq picture (left) and mydaq Connection Diagram (right). Fig. 2 NI mydaq Hardware Block Diagram. IJPT Dec-2016 Vol. 8 Issue No Page 20503
3 The my DAQ provides analog input (AI), analog output (AO), digital input and output (DIO), audio enter and output, DC energy supplies, and digital multimeter (DMM) functions in a compact USB device. Integrated circuits furnished with the aid of Texas instruments kind the vigor and analog I/O subsystems of a mydaq. Figure 2 depicts the arrangement and function of the NI my DAQ subsystems. The mydaq provides a tender front panel (from LabVIEW) to manage the performance of the device, which will launch several devices together with a digital multi-meter (DMM), Oscilloscope, perform generator, Bode analyzer, Dynamic sign Analyser (DSA), Arbitrary Waveform Generator (ARB) and Digital Reader/author. The mydaq additionally presents the express VI of such instruments which can be incorporated within the person written LabVIEW program to perform the supposed performance. Power Supply There are three vigor provides available for use on NI my DAQ. +15 V and 15 V can be used to power analog components equivalent to operational amplifiers and linear regulators. +5 V can be used to power digital components similar to logic instruments. Join the wire from +15V screw terminal on NI mydaq to the +15V vigor rail to your breadboard, after which join the wire from AGND (Analog ground) screw terminal on NI mydaq to the ground rail to your breadboard. Join NI mydaq to your computer by means of the USB cable to power it up. When the blue LED lights, the vigor provide must be running. Which you could make use of the -15 V and +5 V vigour deliver because the same method. 3. Software Used Introduction to Labview Program: LABVIEW (Laboratory virtual Instrument Engineering Workbench) is a system design platform and progress atmosphere for a visible programming language from devices. The graphical language is named "G" (to not be stressed with G-code). In the beginning launched for the Apple Macintosh in 1986, LabVIEW is most often used for knowledge acquisition, instrument manipulate, and industrial automation on a kind of platforms including Microsoft windows, various models of UNIX, Linux, and Mac OS X. The modern variation of LabVIEW is LabVIEW 2012, launched in August The programming language used in lab view, also referred to as G, is a dataflow programming language. Execution is determined by the structure of a graphical block diagram (the LV-supply code) on which the programmer connects specific operate-nodes by drawing wires. These wires propagate variables and any node can execute as quickly as all its input data emerge as on hand. On the grounds that this probably the case for IJPT Dec-2016 Vol. 8 Issue No Page 20504
4 multiple nodes simultaneously, G is inherently able of parallel execution. Multi-processing and multi-threading hardware is automatically exploited by way of the constructed-in scheduler, which multiplexes multiple OS threads over the nodes equipped for executions. Graphical Programming: LABVIEW ties the construction of consumer interfaces (known as front panels) into the progress cycle. Lab view programs/subroutines are known as digital instruments (VIs). Each and every VI has three accessories: a block diagram, a entrance panel and a connector panel. The final is used to symbolize the VI in the block diagrams of other, calling VIs. The front panel is constructed making use of controls and indicators. Controls are inputs they enable a user to deliver knowledge to the VI. Indicators are outputs they indicate, or display, the outcome headquartered on the inputs given to the VI. The again panel, which is a block diagram, involves the graphical supply code. All of the objects placed on the entrance panel will show up on the again panel as terminals. The again panel also comprises constructions and features which participate in operations on controls and give data to warning signs. The structures and services are discovered on the functions palette and can also be positioned on the back panel. Collectively controls, warning signs, buildings and services shall be referred to as nodes. Nodes are related to 1 a further utilizing wires e.g. Two controls and a hallmark can also be wired to the addition function in order that the indicator shows the sum of the two controls. As a result a digital instrument can both be run as a application, with the front panel serving as a person interface, or, when dropped as a node onto the block diagram, the front panel defines the inputs and outputs for the given node by means of the connector panel. This implies every VI may also be effortlessly validated before being embedded as a subroutine into a greater software. The graphical strategy additionally enables nonprogrammers to construct packages via dragging and dropping digital representations of lab equipment with which they are already acquainted. The Labview programming environment, with the incorporated examples and documentation, makes it easy to create small purposes. This can be a improvement on one side, however there may be also a detailed hazard of underestimating the capabilities needed for prime-best G programming. For complex algorithms or huge-scale code, it is most important that the programmer possesses an huge capabilities of the targeted Labview syntax and the topology of its reminiscence management. Essentially the most evolved Labview development systems offer the probability of building stand-alone functions. In addition, it is viable to create disbursed applications, which keep up a correspondence through a patron/server scheme, and are consequently less complicated to put in force as a result of the inherently parallel nature of G IJPT Dec-2016 Vol. 8 Issue No Page 20505
5 Fig Block Diagram of Add node and Multiply node. The snapshot above is an illustration of a simple Lab view program showing the dataflow source code in the type of the block diagram within the cut down left body and the enter and output variables as graphical objects in the higher correct body. The 2 are the principal accessories of a Lab view software known as a virtual Instrument. Thus a virtual instrument can either be run as a software, with the front panel serving as a person interface, or, when dropped as a node onto the block diagram, the entrance panel defines the inputs and outputs for the given node through the connector panel. 4. Theory of Working Block Diagram Fig 4.1 block diagram Basic Block diagram basically contains the rough overlook of the complete project working model by which we get a over view of the project as a whole 4.2 Working Fig.4.2. The internal block. IJPT Dec-2016 Vol. 8 Issue No Page 20506
6 The song which is selected by means of the person is given as a enter to the MY DAQ package by way of the analog enter port which is sent by way of the USB port through the USB cable into the processing gadget that is laptop on this case and the sign enters into processor in which we now have designed one-of-a-kind IIR filters with distinct degrees and wherein we've a characteristic as a way to set a many quantity of taps or orders of filters to acquire the required variety of vocal elimination where ever range it's in. We acquire the filtered indicators which intern is shipped via spectral dimension alongside which we receive the signal output in terms of a graph in the person interface as good then the sign despatched to a same vicinity where we will adjust the volumes of the left and proper output alerts then we acquire the equalised output as good which is given as enter into power spectral process which is given back to the MY DAQ kit from which we receive a output by way of audio output port of MY DAQ package through either a headset or a speakers most importantly it is to be determined that the volumes of the output are diversified consistent with the requirement of the user and likewise the consumer will have an awfully light song of lead singer to comply with the usual cue as good. Evaluation AND results When we attempt to evaluate this approach, it turns into really complex for the reason that of the non-existence of such procedure and science in current market by which we can just supply any exiting music as an input to the process and acquire an output which is a karaoke output The assessment that we can draw with present karaoke device is that we don t quite have to hold a big files to have a karaoke device to have the enjoyment which is not require in case of the proposed gadget The User Interface without Input IJPT Dec-2016 Vol. 8 Issue No Page 20507
7 The User Interface While Having Signal Input Conclusion When compared with the entire earlier Karaoke contraptions current already out there which need to hold large amount files which ought to be up-to-date almost always which creates a fuss across the system an may not give the desired enjoyment considering that of lack of files either may be as a result of unavailability or nonexistence of karaoke records This mission sincerely removes the all the problems confronted by means of the customers at the same time utilizing a karaoke device. In this assignment the consumer can honestly choose a tune all through himself in his media gadget an just plug in and have enjoyable through letting the designed model perform the mission it is meant to perform 7. References 1. James Clerk Maxwell, 1868 Digital Image Processing Mathematical and Computational Methods. 2. R.Gonzalez and R. Woods, Digital Image Processing, Addison Wesley, 1992, pp Reference for dsp : ni.com/dsp 4. J. Bonada, Automatic Technique in Frequency Domain for Near-Lossless Time-Scale Modification of Audio, in Proc. of International Computer Music Conference (2000). IJPT Dec-2016 Vol. 8 Issue No Page 20508
8 5. E. Coyle, D. Dorran, and R. Lawlor, A Comparison of Time-Domain Time-Scale Modification Algorithms, presented at the 120th Convention of the Audio Engineering Society (2006 May), convention paper D. Dorran and R. Lawlor, Time-Scale Modification of Music Using a Synchronized Subband/Time-Domain Approach, in IEEE International Conference on Acoustis, Speech and Signal Processing (2004). 7. M. Vetterli and C. Herley, Wavelets and Filter Banks: Theory and Design, IEEE Transactions on Audio, Speech and Language Processing, vol. 40, no. 9, pp (1992). 8. E. Moulines and F. Charpentier, Pitch-Synchronous Waveform Processing Techniques for Text-to-Speech Synthesis Using Diphones, Speech Communication, vol. 9, no. 5, pp (1990). 9. J. Laroche, Autocorrelation Method for High Quality Time/Pitch-Scaling, in Proc. IEEE Workshop Applications of Signal Processing to Audio and Acoustics (WASPAA), IEEE (1993), pp IJPT Dec-2016 Vol. 8 Issue No Page 20509
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