Modern televisions offer impressive picture quality, but when it comes to sound, they often leave a lot to be desired. The causes of poor TV sound are varied and range from the built-in TV speakers to the specific challenges of room acoustics. We take a detailed look at the reasons behind poor TV sound and explain how you can significantly improve the listening experience by using external TV speakers or specific technologies.
Key Takeaways
- Flat TV designs offer no space for powerful built-in speakers, resulting in a lack of bass and low frequencies
- Poor speaker positioning (pointing downwards/backwards) and unfavourable room acoustics further distort the sound
- Digital compression in streaming services reduces audio quality and makes dialogue difficult to understand
- Modern productions often mix sound effects louder than dialogue, which impairs speech intelligibility
- Uneven volume fluctuations between programmes and adverts disrupt the viewing experience
- Individual hearing needs and age-related hearing changes require tailored solutions for optimal TV sound
Why built-in TV speakers often disappoint
A television’s speakers are crucial to the listening experience. However, with TVs becoming increasingly slim, space for high-quality speakers is limited. The small TV speakers integrated into the chassis simply cannot reproduce low frequencies and bass, resulting in a flat and unbalanced sound. Particularly with modern, ultra-slim televisions, there is little room for powerful speakers that could fill the room with rich sound. These speakers are often designed to reproduce high frequencies, resulting in a lack of lower tones and, above all, bass.
Another factor is the positioning of the TV speakers. On many televisions, the speakers are directed downwards or backwards, which can negatively affect the sound through reflections and scattering. As a result, the sound is perceived as less direct and clear, further impairing the listening experience.
How the room can distort the sound
The acoustics of the room in which the TV is located play a significant role in sound quality. Rooms with hard, reflective surfaces such as tiles or glass can strongly reflect sound waves, leading to distortion and echoes. Similarly, furniture and other soft materials can absorb sound, which impairs the intelligibility of dialogue. A TV speaker that sounds good in one such room may sound completely different in another.
However, room acoustics can be optimised with a few simple measures. Changing the speaker placement or adding carpets, curtains and wall panels can already make a significant difference. The aim is to distribute the sound evenly and minimise reflections, so that the sound becomes clearer and more intelligible.
How digital transmissions degrade sound
An often-overlooked factor in sound quality is the compression and transmission of the audio signal. Digital transmissions and streaming services in particular can lead to a significant reduction in audio quality. Many streaming services use compression technologies to save bandwidth and optimise data transmission, but this comes at the expense of sound quality.
Compressed audio signals lose detail and dynamics, resulting in a less clear sound. In dialogue in particular, this can make words unintelligible, as the subtle nuances of the spoken text are lost. Using high-quality external audio sources and playing back uncompressed formats can help improve this.
Why dialogue is often difficult to understand
In modern productions, sound effects and music are often mixed in such a way that they fill the room with intense sounds. However, this can result in dialogue getting lost amidst explosions, music and other noises. Inadequate mixing between dialogue and effects makes it difficult to understand what is being said.
Another problem is the use of Dolby technologies or complex surround sound systems, where the balance between dialogue and effects is not always optimally adjusted. External TV speakers or soundbars can help here by adjusting the mix and prioritising speech, whilst ensuring that sound effects are not lost.
Listening habits: why sound is perceived differently
Not everyone hears in the same way. Hearing ability changes particularly with age, and many people have difficulty hearing certain frequencies, which can make TV sound seem less clear and intelligible. People with reduced hearing often struggle to understand dialogue clearly, especially when it is embedded in a complex soundscape.
Technologies such as TV hearing amplifiers, individually adjustable TV speakers or soundbars tailored to specific hearing needs can bring about a significant improvement in such cases. Some modern systems even offer the option of optimising the sound based on personal listening habits to maximise speech intelligibility.
The limitations of Dolby technologies with complex sounds
The introduction of Dolby technologies, particularly Dolby Atmos, has revolutionised the listening experience by offering multidimensional sound that surrounds the room. However, even these advanced technologies have their limitations. Particularly with complex sound mixes, it can be difficult to achieve a clear separation between dialogue, music and effects. Sound quality can suffer if device settings are incorrect or speaker systems are sub-optimal.
The challenge with using Dolby sound often lies in setting up and calibrating the system correctly. If the surround sound system is not set up correctly or the devices are not compatible, the sound can seem unclear and distorted. In such cases, it is worth checking the settings and, if necessary, consulting a specialist for calibration.
Why the slim design of televisions limits sound quality
The trend towards increasingly flat televisions has the advantage of saving space and looking modern, but this poses a major obstacle to sound quality. Due to limited space, the built-in TV speakers are often unable to reproduce low frequencies and bass, resulting in a flat, hollow-sounding audio.
This is particularly disruptive when watching action films, music videos and newly produced TV series, but also for people with hearing difficulties, as the lack of bass and low frequencies makes the overall sound seem unbalanced and, in some cases, difficult to understand. The solution here is to use external TV speakers, which are specifically designed to improve sound quality and reproduce lower frequencies more effectively.
How uneven volume fluctuations disrupt the viewing experience
A common problem with TV sound is the uneven volume between dialogue, sound effects and adverts, which often means the viewer has to constantly adjust the volume. This can be particularly disruptive during ad breaks or when switching between different programme content.
Modern soundbars and TV speaker systems often feature a volume control function that evens out such fluctuations and makes the sound more consistent. This can significantly improve the listening experience and ensure that the sound remains pleasant and consistent.
How surround sound systems can enhance the listening experience
Surround sound systems can significantly enhance the TV viewing experience, but only if they are properly installed and set up. For many users, the speakers are not positioned optimally or the sound calibration is inadequate, resulting in an unbalanced sound. The correct placement of the TV speakers in the room is particularly crucial to ensure the sound is distributed correctly.
Another factor is the number of TV speakers. A true surround sound experience requires not just a soundbar, but a system comprising multiple speakers distributed around the room. If the TV speakers are not strategically positioned, the sound can seem muffled and lack immersion. Setting up a home cinema system therefore requires both technical knowledge and time.
Why the right audio format is crucial for sound
One final important point is choosing the right audio format. Many televisions and audio sources offer various sound formats such as DTS, Dolby Digital or uncompressed PCM. Not all audio formats are equally suitable for every type of content. Particularly with older films or TV programmes, the audio format used can negatively affect sound quality. To achieve the best sound, the audio format should be adapted to the specific source and application.