Table of Contents
What is a Spectrum Analyzer?
A spectrum analyzer is a vital tool in audio production, offering a visual representation of the frequency spectrum within an audio signal. This enables precise analysis and adjustment of frequency balance for a well-rounded sound. By using a spectrum analyzer, users can easily identify problematic frequencies and enhance tonal balance, leading to an improved overall mix.
Spectrum analyzers are versatile, allowing for the analysis of individual tracks, entire mixes, or multiple tracks simultaneously. This flexibility aids in detecting frequency collisions and balance issues, whether working on complex multi-channel analysis or fine-tuning a stereo signal.
Key Features of Spectrum Analyzers
Real-Time Frequency Spectrum Display
Spectrum analyzers are crucial in audio production, offering features that benefit both novice and experienced engineers. A primary feature is the real-time frequency spectrum display, providing instant visual feedback on the audio signal’s spectral content.
Customizable Analysis Settings
Adjustable FFT size and window type allow users to customize the analysis for precise results. Multiple display modes, such as spectrogram and 3D waterfall views, offer varied perspectives on the audio’s spectral content.
Correlation Metering and Phase Analysis
Essential features include correlation metering and phase analysis, which help assess the stereo image and ensure proper phase alignment between channels. This is vital in multi-channel and stereo signal analysis to avoid unwanted artifacts.
Secondary Spectrum Display and Target Curve Comparison
The ability to display secondary spectrum and compare it with target curves is valuable for matching audio material against reference tracks. Customizable preferences, such as FFT window overlap percentage and visual slope, enhance the tool’s versatility.
Top Spectrum Analyzer Plugins
iZotope Insight 2
iZotope Insight 2 is a comprehensive metering and audio analysis plugin that is widely used in post-production and music studios. It offers a detailed and responsive spectrogram for monitoring the complete spectral content of your mix. It provides a clear and intuitive display, allowing music producers to visually monitor their work. The user interface is customizable and resizable, fitting any professional audio mixing and production workflow. The plugin’s design is easy on the eye, making it comfortable for extended use.
Insight 2 includes a variety of metering tools such as true peak, RMS, and K-system level meters, loudness meters, 2D and 3D spectrogram, spectrum analyzer, and both a stereo vectorscope and surround scope. It also includes a unique Intelligibility Meter that measures the clarity of dialogue in the mix, providing visual feedback on whether the dialogue is being overshadowed by the rest of the mix. This feature can be particularly useful in post-production work where dialogue clarity is crucial. The plugin also includes Relay, a feature that routes any specified tracks or buses to Insight 2 for analysis. This allows for a clear picture of how individual tracks stack up against the entire mix.
This is the Best Spectrum Analyzer VST Plugin in 2024.
Blue Cat’s FreqAnalyst Pro
Blue Cat’s FreqAnalyst is a spectrum analyzer plugin that provides music producers with real-time visual feedback of the frequency spectrum of audio signals. It is known for its smoothness and high resolution in both time and frequency domains, which is achieved through unique interpolation algorithms. This allows for continuous variations to be displayed, even at very high frequencies, giving producers total control over the audio-to-frequency display conversion.
The plugin includes a special thresholding system to help users focus on the important parts of the spectrum. For those who require extra precision in a specific frequency range, FreqAnalyst offers a zoomable display. The user interface is customizable, catering to individual workflow preferences. For those interested in stereo imaging, Blue Cat’s StereoScope Pro can be used in conjunction with FreqAnalyst. StereoScope Pro provides an analysis of how audio signals are spread in the stereo field and includes an integrated phase correlation meter, which is essential for detecting phase and mono compatibility issues.
sonible true:balance
Sonible true:balance is a metering plugin designed to provide music producers with visual feedback on the spectral balance of their mixes. It aims to help users compare the frequency balance of their tracks to suitable references, which can be particularly beneficial for inexperienced amateurs or those looking to ensure their tonal balance aligns with their chosen genre for specific frequencies.
One of the key strengths of true:balance is its visual feedback system. The plugin offers a clear and intuitive display that allows producers to visually compare their work with reference tracks. This can be a powerful tool for learning and for making informed decisions about mix adjustments. The user interface is simple to use, which lowers the barrier to entry for those who may not be as experienced with audio analysis tools.
True:balance includes a Balance Check feature that analyzes the spectral distribution of your signal and provides hints on potential modifications to improve the mix. Additionally, the Mono Check feature points out any issues concerning the mono compatibility of your mix. These features are supported by target indicators and visualizations designed to be easily interpretable, ensuring that users can quickly understand and act on the information presented.
Blue Cat’s Analysis Pack
Almost everything you require to evaluate and quantify the frequency content of audio signal is included in Blue Cat’s Audio Analysis Pack, which is available in a handy package. A dizzying variety of helpful plug-ins are included in the box, all of which are also offered separately. Two of these plug-ins for frequency analysis are comparable in performance to standalone spectrum analyzers. Additionally, you can use the measurements from these plug-ins to control other plug-ins, including MIDI in struments.
FreqAnalyst Multi is the first program on the list since it offers a variety of spectrum analysis features for multiple tracks or audio streams. It offers a thorough picture of the frequency and time of multiple tracks simultaneously, all from a single screen, making it perfect for mixing and mastering for a music producer. It’s a practical and flexible mixing tool that also works well as a frequency overlap detector.
MeldaProduction MMultiAnalyzer
You can examine many recordings at once with MMultiAnalyzer thanks to its array of audio analysis and enhancing features. Each track you want to analyze only has to have an instance of the plug-in installed; they will automatically recognize one another. All instances of the plug-in will then have access to all data.
A spectrum analyzer plug-in is only one aspect of MMultiAnalyzer. Additionally, it has tools for collision detection, correlation meter, loudness comparison, and stereo analysis built right in problem areas. Despite having so many capabilities, the plug-in never becomes overly difficult to use. The MMultiAnalyzer workflow is quick and simple whether you use it as a collision detector, a stereo analyzer, or a multi-track sonogram. Additionally, MMultiAnalyzer has capabilities that make it simple to locate particular frequencies. These include de-harmonization, super-resolution, and normalization functions, all of which assist you in identifying audio quality issues.
NUGEN Audio Visualizer
In the realm of spectrum analyzer plug-ins, NuGen’s Visualizer may not be a household name, but that in no way implies that it has any flaws. It offers feature-rich capabilities for analyzing audio and streamlining workflow, making it just as capable as its more well-known competitors. Additionally, Visualizer assists you in recreating ideal mix settings and avoiding mistakes that are made again.
Visualizer offers a single-screen user interface for examining the audio material’s frequency content. The interface can be adjusted to any size, occupying very minimal screen space or offering a thorough overview as needed. The display may be customized in a variety of ways, and switching between different perspectives is as easy as hitting a button.
Tips for Effective Spectrum Analysis
To achieve accurate results from your spectrum analysis, incorporate these strategies. First, understand the features of your spectrum analyzer plugin, whether it’s a free version like Voxengo SPAN or a paid option like Blue Cat’s FreqAnalyst. Familiarity with your tool enhances your analysis.
Utilize real-time feedback to monitor frequency spectrum changes as you adjust audio signals. Experiment with different FFT window sizes and overlap percentages for precise analysis tailored to your audio material.
Compare your spectrum analysis with reference tracks to align your audio’s frequency balance with industry standards. Use the secondary spectrum display to match your audio material against target curves.
Incorporate correlation metering and phase analysis to maintain a balanced stereo image and avoid phase-related issues. For multi-channel analysis, examine each channel group’s spectral content to resolve frequency collisions.
Conclusion
Spectrum analyzers are indispensable in the world of audio production, offering both beginners and seasoned professionals the ability to delve deeply into the frequency spectrum of their audio material. By providing a visual representation of the spectral content, these tools allow users to identify and address problematic frequencies, enhancing the overall mix and ensuring a harmonious sound.